Further testing found this to occur only after many clmath operations,
with the number required being fairly but not exactly repeatable, more
for smaller arrays, and being reset by exiting and restarting Python but
not by gc.collect(); this suggests a memory leak, so the problem could
be in either pyopencl or beignet. Upstream (2014.1) pyopencl is also
affected.
Sometimes a brief hang is followed by a crash with the message
python: /tmp/buildd/beignet-0.9.3git/src/intel/intel_gpgpu.c:567:
intel_gpgpu_check_binded_buf_address: Assertion `gpgpu->binded_buf[i]->offset
!= 0' failed.
but more often it is an indefinite hang with no message.
** Also affects: pyopencl (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1354086
Title:
[i5-3230] Crash/hang/graphical artifacts in pyopencl
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