GPU work and Gamma-ray pulsar binary search #1 on GPUs v1.13
16 Dec 2016 16:10:11 UTC
Topic 203790
(moderation:
None of my work on "Gamma-ray pulsar binary search #1 on GPUs v1.13 (FGRPopencl-ati) x86_64-pc-linux-gnu " is working. After about 26 or 27 seconds of CPU work it fails compiling the OpenCL.
A log (typically https://einsteinathome.org/task/595454737) fails like ...
15:44:47 (8615): [debug]: Set up communication with graphics process.
boinc_get_opencl_ids returned [0x1b47610 , 0x7f1f8d03a430]
Using OpenCL platform provided by: Advanced Micro Devices, Inc.
Using OpenCL device "Juniper" by: Advanced Micro Devices, Inc.
Max allocation limit: 134217728
OpenCL compiling FAILED! : -11 . Error message: "/tmp/OCLgCW5YO.cl", line 10: error: identifier "double2" is undefined
__kernel void test( __global double2 *vec) {
^
1 error detected in the compilation of "/tmp/OCLgCW5YO.cl".
Frontend phase failed compilation.
OpenCL device has no FP64 support
% Opening inputfile: ../../projects/einstein.phys.uwm.edu/LATeah2003L.dat
I have never had problems before, and SETI is happy. So it looks like something new with this particular Einstein application.
I don't really understand though. The application seems to be saying my OpenCL does not support 64 bit. But if I "clinfo | grep 64" I have the extensions cl_khr_fp64 & cl_amd_fp64, so I don't really know what it is complaining about or why.
Anyone got any useful advice ?
I think the error message
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I think the error message refers to your GPU/driver not being able to do double precision floating point calculations.
I would try to update the graphics driver.
Ha Ha. You are right !! My
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Ha Ha. You are right !! My driver does not have 64bit support.
If I had looked in the correct part of the clinfo report I would have seen it was not there. Now I know where to look and what to fix.
Thanks for the reply.
Later...
Looks like my hardware is obsolete. Current (latest) driver only supports up to XServer 1.10. I'm on XServer 1.17. Seems that my GPU will no longer be able to help einstein.
Mike Davies wrote:Looks like
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Correct - Juniper does not support DP. For a list see wiki
I think HD 5830 (Cypress) and later cards do support DP.