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<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
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This is all I get from that server:</div>
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<br>
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```bash</div>
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dim[23674] = 0</div>
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dim[23675] = 0</div>
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dim[23676] = 0</div>
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dim[23677] = 0</div>
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dim[23678] = 0</div>
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dim[23679] = 0</div>
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dim[23680] = 0</div>
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dim[23681] = 0</div>
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dim[23682] = 0</div>
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dim[23683] = 0</div>
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dim[23684] = 0</div>
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dim[23685] = 0</div>
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dim[23686] = 0</div>
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dim[23687] = 0</div>
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dim[23688] = 0</div>
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dim[23689] = 0</div>
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dim[23690] = 0</div>
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dim[23691] = 0</div>
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var.store %24 %50 @loc="44:43";</div>
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branch ^block_4;</div>
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</div>
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^block_7:</div>
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%51 : hat.buffer.F32Array = var.load %8 @loc="47:17";</div>
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%52 : hat.KernelContext = var.load %5 @loc="47:31";</div>
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%53 : int = field.load %52 @"hat.KernelContext::x()int" @loc="47:31";</div>
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%54 : int = var.load %9 @loc="47:38";</div>
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%55 : int = mul %53 %54 @loc="47:31";</div>
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%56 : int = var.load %16 @loc="47:45";</div>
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%57 : int = add %55 %56 @loc="47:31";</div>
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%58 : long = conv %57 @loc="47:17";</div>
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%59 : float = var.load %22 @loc="47:48";</div>
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invoke %51 %58 %59 @"hat.buffer.F32Array::array(long, float)void" @loc="47:17";</div>
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branch ^block_8;</div>
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</div>
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^block_8:</div>
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%60 : int = var.load %16 @loc="42:39";</div>
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%61 : int = constant @"1" @loc="42:39";</div>
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%62 : int = add %60 %61 @loc="42:39";</div>
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var.store %16 %62 @loc="42:39";</div>
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branch ^block_2;</div>
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</div>
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^block_9:</div>
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branch ^block_11;</div>
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</div>
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^block_10:</div>
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branch ^block_11;</div>
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</div>
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^block_11:</div>
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return @loc="39:5";</div>
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};</div>
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#define NDRANGE_OPENCL</div>
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#pragma OPENCL EXTENSION cl_khr_global_int32_base_atomics : enable</div>
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#pragma OPENCL EXTENSION cl_khr_local_int32_base_atomics : enable</div>
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#ifndef NULL</div>
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#define NULL 0</div>
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#endif</div>
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#pragma OPENCL EXTENSION cl_khr_global_int32_base_atomics : enable</div>
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#pragma OPENCL EXTENSION cl_khr_local_int32_base_atomics : enable</div>
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typedef char s8_t;</div>
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typedef char byte;</div>
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typedef char boolean;</div>
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typedef unsigned char u8_t;</div>
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typedef short s16_t;</div>
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typedef unsigned short u16_t;</div>
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typedef unsigned int u32_t;</div>
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typedef int s32_t;</div>
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typedef float f32_t;</div>
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typedef long s64_t;</div>
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typedef unsigned long u64_t;</div>
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typedef struct KernelContext_s{</div>
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int x;</div>
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int maxX;</div>
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}KernelContext_t;</div>
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typedef struct F32Array_s{</div>
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int length;</div>
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float array[1];</div>
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}F32Array_t;</div>
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<br>
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<br>
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__kernel void matrixMultiplyKernel(</div>
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__global KernelContext_t *global_kc, __global F32Array_t* matrixA, __global F32Array_t* matrixB, __global F32Array_t* matrixC, int size</div>
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){</div>
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KernelContext_t mine;</div>
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KernelContext_t* kc=&mine;</div>
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kc->x=get_global_id(0);</div>
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kc->maxX=global_kc->maxX;</div>
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if(kc->x<kc->maxX){</div>
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for(int j = 0; j<size; j=j+1){</div>
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float acc = (float)0;</div>
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for(int k = 0; k<size; k=k+1){</div>
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acc=acc+matrixA->array[(long)(kc->x*size+k)]*matrixB->array[(long)(k*size+j)];</div>
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}</div>
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matrixC->array[(long)(kc->x*size+j)]=acc;</div>
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}</div>
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}</div>
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return;</div>
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}</div>
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<br>
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clCreateProgramWithSource failed</div>
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#</div>
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# A fatal error has been detected by the Java Runtime Environment:</div>
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#</div>
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# SIGSEGV (0xb) at pc=0x00007adaa0f5c2f0, pid=710525, tid=710526</div>
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#</div>
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# JRE version: OpenJDK Runtime Environment (24.0) (build 24-internal-adhoc.juan.babylon)</div>
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# Java VM: OpenJDK 64-Bit Server VM (24-internal-adhoc.juan.babylon, mixed mode, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)</div>
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# Problematic frame:</div>
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# C [libopencl_backend.so+0x62f0] programOK+0x1c</div>
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#</div>
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# Core dump will be written. Default location: Core dumps may be processed with "/usr/share/apport/apport -p%p -s%s -c%c -d%d -P%P -u%u -g%g -- %E" (or dumping to /home/juan/babylon/babylon/hat/core.710525)</div>
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#</div>
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# An error report file with more information is saved as:</div>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
# /home/juan/babylon/babylon/hat/hs_err_pid710525.log</div>
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[1.332s][warning][os] Loading hsdis library failed</div>
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#</div>
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# If you would like to submit a bug report, please visit:</div>
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# https://bugreport.java.com/bugreport/crash.jsp</div>
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# The crash happened outside the Java Virtual Machine in native code.</div>
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# See problematic frame for where to report the bug.</div>
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```</div>
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<br>
</div>
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There are thousands of messages with `dim[number] = 0` </div>
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<br>
</div>
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My take is that the there is a problem in the runtime reading those values, and then, when the kernel is launched, which I guess it will tune the thread-scheduler based on the max number of threads per dimension, it fails. This only happens with the OCK (oneAPI
Construction Kit) . </div>
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<br>
</div>
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Juan</div>
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<br>
</div>
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<br>
</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Gary Frost <gary.frost@oracle.com><br>
<b>Sent:</b> 24 January 2025 12:54<br>
<b>To:</b> Juan Fumero <juan.fumero@manchester.ac.uk>; babylon-dev@openjdk.org <babylon-dev@openjdk.org><br>
<b>Subject:</b> Re: [External] : Re: Error running HAT with ComputeAorta on CPUs (Codeplay)</font>
<div> </div>
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<br>
Juan,<br>
<br>
Thanks for this it does indeed help,<br>
<br>
So I think the OpenCL compile failed (which is clearly bad 😉 ), and I did discover that there is a 'crash route' if compile failed, but OpenCL failed to return a build log. <br>
<br>
After reporting clCreateProgramWithSource to stderr the backend should have dumped both the OpenCL source
<b>and</b> the log but still return a PTR (cast to long) of a OpenCL program (C++ ptr instance). It seems to have returned a bad ptr (which when recast to an OpenCL program instance (when we try to validate the program from the Java side), causes the crash.<br>
<br>
Do you see either/both a dump of the source and/or the log from compile failure on stderr?<br>
<br>
I would definitely like to see the OpenCL... at least.<br>
<br>
Gary<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Juan Fumero <juan.fumero@manchester.ac.uk><br>
<b>Sent:</b> Friday, January 24, 2025 5:00 AM<br>
<b>To:</b> Gary Frost <gary.frost@oracle.com>; babylon-dev@openjdk.org <babylon-dev@openjdk.org><br>
<b>Subject:</b> Re: [External] : Re: Error running HAT with ComputeAorta on CPUs (Codeplay)</font>
<div> </div>
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Hi Gary, </div>
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Yes, I do have the logs (see attached file)</div>
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<br>
</div>
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Juan</div>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gary Frost <gary.frost@oracle.com><br>
<b>Sent:</b> 23 January 2025 16:10<br>
<b>To:</b> Juan Fumero <juan.fumero@manchester.ac.uk>; babylon-dev@openjdk.org <babylon-dev@openjdk.org><br>
<b>Subject:</b> Re: [External] : Re: Error running HAT with ComputeAorta on CPUs (Codeplay)</font>
<div> </div>
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There should also be a log generated when the VM 'tumbled' 😉. Which will help me map symbols. <br>
<br>
Do you still have that?<br>
<br>
Gary<br>
<br>
<br>
<br>
<br>
<br>
<br>
</div>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Juan Fumero <juan.fumero@manchester.ac.uk><br>
<b>Sent:</b> Thursday, January 23, 2025 3:07 PM<br>
<b>To:</b> Gary Frost <gary.frost@oracle.com>; babylon-dev@openjdk.org <babylon-dev@openjdk.org><br>
<b>Subject:</b> [External] : Re: Error running HAT with ComputeAorta on CPUs (Codeplay)</font>
<div> </div>
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It crashed after it failed from the <code>clCreateProgramWithSource</code>. </div>
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<br>
</div>
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```</div>
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clCreateProgramWithSource failed</div>
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#</div>
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# A fatal error has been detected by the Java Runtime Environment:</div>
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#</div>
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# SIGSEGV (0xb) at pc=0x0000705e5af5c2f0, pid=405337, tid=405338</div>
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#</div>
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# JRE version: OpenJDK Runtime Environment (24.0) (build 24-internal-adhoc.juan.babylon)</div>
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# Java VM: OpenJDK 64-Bit Server VM (24-internal-adhoc.juan.babylon, mixed mode, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)</div>
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# Problematic frame:</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
# C [libopencl_backend.so+0x62f0] programOK+0x1c</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
#</div>
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# Core dump will be written. Default location: Core dumps may be processed with "/usr/share/apport/apport -p%p -s%s -c%c -d%d -P%P -u%u -g%g -- %E" (or dumping to /home/juan/babylon/babylon/hat/core.405337)</div>
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#</div>
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# An error report file with more information is saved as:</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
# /home/juan/babylon/babylon/hat/hs_err_pid405337.log</div>
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[1.306s][warning][os] Loading hsdis library failed</div>
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```</div>
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<br>
</div>
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I guess, the program continues, and when it tried to launch, it failed due to wrong thread-scheduling? </div>
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<br>
</div>
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Juan</div>
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<br>
</div>
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<br>
</div>
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<div id="x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gary Frost <gary.frost@oracle.com><br>
<b>Sent:</b> 23 January 2025 16:00<br>
<b>To:</b> Juan Fumero <juan.fumero@manchester.ac.uk>; babylon-dev@openjdk.org <babylon-dev@openjdk.org><br>
<b>Subject:</b> Re: Error running HAT with ComputeAorta on CPUs (Codeplay)</font>
<div> </div>
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Thanks for the heads-up Juan.<br>
<br>
<br>
What error did you get? Did it crash in native wrapper?<br>
<br>
Gary<br>
<br>
<br>
<br>
<br>
</div>
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<div id="x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> babylon-dev <babylon-dev-retn@openjdk.org> on behalf of Juan Fumero <juan.fumero@manchester.ac.uk><br>
<b>Sent:</b> Thursday, January 23, 2025 1:00 PM<br>
<b>To:</b> babylon-dev@openjdk.org <babylon-dev@openjdk.org><br>
<b>Subject:</b> Error running HAT with ComputeAorta on CPUs (Codeplay)</font>
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Hi all, </div>
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It seems there is an error when running with the Codeplay OCK implementation:</div>
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<br>
</div>
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<a href="https://urldefense.com/v3/__https://github.com/uxlfoundation/oneapi-construction-kit__;!!PDiH4ENfjr2_Jw!BH3TA_zDkxD54BTy-E2L4H9uKSMoZQqKld7EUauT9uHB9ICsYdlZxkS2Inwf_QeTy4wnYONS75gtKESdo6MuXjKmCveK$">https://github.com/uxlfoundation/oneapi-construction-kit
[github.com]</a> </div>
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<br>
</div>
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```</div>
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$ java @bldr/hatrun ffi-opencl matmul </div>
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Note: /home/juan/babylon/babylon/hat/bldr/Bldr.java uses preview features of Java SE 24.</div>
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Note: Recompile with -Xlint:preview for details.</div>
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platform{</div>
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CL_PLATFORM_VENDOR.."Codeplay Software Ltd."</div>
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CL_PLATFORM_VERSION."OpenCL 3.0 ComputeAorta 4.0.0 Linux x86_64 (Release, 5be5a8da)"</div>
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CL_PLATFORM_NAME...."ComputeAorta"</div>
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CL_DEVICE_TYPE..................... (0x73d821d10650)</div>
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CL_DEVICE_MAX_COMPUTE_UNITS........ 0</div>
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CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS. 0</div>
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CL_DEVICE_MAX_WORK_GROUP_SIZE...... 127372130793944</div>
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CL_DEVICE_MAX_MEM_ALLOC_SIZE....... 127372117500240</div>
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CL_DEVICE_GLOBAL_MEM_SIZE.......... 127372117477136</div>
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CL_DEVICE_LOCAL_MEM_SIZE........... 984</div>
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CL_DEVICE_PROFILE.................. </div>
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CL_DEVICE_VERSION.................. [!s</div>
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CL_DRIVER_VERSION.................. </div>
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CL_DEVICE_OPENCL_C_VERSION......... `K!s</div>
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CL_DEVICE_NAME..................... 5</div>
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CL_DEVICE_EXTENSIONS............... </div>
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CL_DEVICE_BUILT_IN_KERNELS......... c!s</div>
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}</div>
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```</div>
<div class="x_x_x_x_x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
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Values are not taken correctly, and then it fails the kernel launch. If I use the Intel compute runtime, it runs fine. </div>
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<br>
</div>
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Output from <code>clinfo</code>:</div>
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<br>
</div>
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```</div>
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Platform Name ComputeAorta</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Number of devices 1</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device Name ComputeAorta x86_64</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device Vendor Codeplay Software Ltd.</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device Vendor ID 0x10004</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device Version OpenCL 3.0 ComputeAorta 4.0.0 LLVM 18.1.8</div>
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Device Numeric Version 0xc00000 (3.0.0)</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Driver Version 4.0</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device OpenCL C Version OpenCL C 1.2 Clang 18.1.8</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device OpenCL C all versions OpenCL C 0x402000 (1.2.0)</div>
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OpenCL C 0x401000 (1.1.0)</div>
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OpenCL C 0x400000 (1.0.0)</div>
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OpenCL C 0xc00000 (3.0.0)</div>
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Device OpenCL C features __opencl_c_generic_address_space 0xc00000 (3.0.0)</div>
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__opencl_c_subgroups 0xc00000 (3.0.0)</div>
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__opencl_c_work_group_collective_functions 0xc00000 (3.0.0)</div>
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__opencl_c_int64 0xc00000 (3.0.0)</div>
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__opencl_c_fp64 0xc00000 (3.0.0)</div>
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Latest comfornace test passed v2020-10-18-08</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device Type CPU</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device Profile FULL_PROFILE</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Device Available Yes</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Compiler Available Yes</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Linker Available Yes</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Max compute units 32</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Max clock frequency 5260MHz</div>
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Device Partition (core)</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Max number of sub-devices 0</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Supported partition types None</div>
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Supported affinity domains (n/a)</div>
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Max work item dimensions 3</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Max work item sizes 1024x1024x1024</div>
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Max work group size 1024</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Preferred work group size multiple (device) 1</div>
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Preferred work group size multiple (kernel) 1024</div>
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Max sub-groups per work group 1024</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Sub-group sizes (Intel) 8, 4, 16, 32, 1</div>
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Preferred / native vector sizes </div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
char 16 / 16 </div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
short 8 / 8 </div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
int 4 / 4 </div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
long 2 / 2 </div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
half 0 / 0 (n/a)</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
float 4 / 4 </div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
double 2 / 2 (cl_khr_fp64)</div>
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Half-precision Floating-point support (n/a)</div>
<div class="x_x_x_x_x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Single-precision Floating-point support (core)</div>
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```</div>
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<br>
</div>
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Kind regards,</div>
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Juan</div>
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<br>
</div>
</div>
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