When a fatal memory fault occurs the scheduler context-saves all queues
in the process and notifies the runtime through the memory event. The
saved state contains all GPR/LDS data at the moment of the fault.
Retrieve this state and present it to the user if HSA_DEBUG_FAULT is set
to "analyze" and the wavefront caused the fault. If amdgcn-capable objdump
is in the PATH invoke this to disassemble code around the PC.
Queue lifetime is now managed by the runtime to allow querying the
context save state for all active queues.
Change-Id: I6fee662fad1c4f9aa125bf5c53d7d0ea1ab32f95
[ROCm/ROCR-Runtime commit: 75c9506f9d]
- Build system fixes
- No user-mode high-precision timer by default, use clock_gettime
- Use C11 aligned_alloc pending C++17 std::aligned_alloc
Change-Id: I268365bdfd11d1e817a89584b9e086ee5b86e1dc
[ROCm/ROCR-Runtime commit: 9e575ea96a]
Also emit error messages to stderr if no async queue error callback was registered and queue fault messages are enabled (on by default).
Queue fault messages are controlled with env key HSA_ENABLE_QUEUE_FAULT_MESSAGE.
Change-Id: I496487b8d048b83aa95b9784e92928211f167b17
[ROCm/ROCR-Runtime commit: 0e17cc2887]
C11 atomics are not statically guaranteed to be lock free and so
may not be atomic with respect to atomic operations originating
outside the standard library, such as platform atomics.
C11 macros to statically discover always lock free operations
(ATOMIC_*_LOCK_FREE) do not cover uint64_t in GCC and
std::atomic<uint64_t> is not a type alias of any covered type.
All use of __atomic by atomic_helpers.h is statically checked to be
always lock free.
GCC builtin fencing does not appear to be strong enough for WC memory.
Added an option (enabled) to enforce consistency for WC memory on x64.
__sync builtin's were not used as they were declared legacy by GCC.
Added a strongly conservative option (ALWAYS_CONSERVATIVE) to enable
use of full memory fences in place of partial fences and compiler
driven processor specific optimization.
Change-Id: Id7aaaca626144070f58759f6a348cbee4612bbc0
[ROCm/ROCR-Runtime commit: 1bc15bbf79]
This option was disabled by default to address issues writing to stderr
in Windows applications. The lack of an error message for memory access
faults is confusing to users, however.
Enable the error message by default on Linux only.
Change-Id: I1f44ba42362f8874abdc7c8e63ddd54a855b5394
[ROCm/ROCR-Runtime commit: acc5f15e4c]
Laurent Morichetti
hthangir
Sean Keely
Ramesh Errabolu
Kenny Ho
Jay Cornwall
Besar Wicaksono (xN/A) TX [TEXT]
James Edwards (xN/A) TX