PTXAS Summary Parsing Error on CUDA 12.8

[rudrajyotiroy]

Error (after PTXAS generation):

GPGPU-Sim: ERROR while parsing output of ptxas (used to capture resource usage information)
GPGPU-Sim: 2dconv.1.sm_52.ptx (2dconv.1.sm_52.ptxas:5) Syntax error:

ptxas info : Used 47 registers, used 1 barriers, 360 bytes cmem[0], 12 bytes cmem[2]
^

GPGPU-Sim: *** exit detected ***

Generated PTXAS Summary for CUDA 11.0 on Ubuntu 16.04 Docker (Running correctly):

ptxas info : 0 bytes gmem
ptxas info : Compiling entry function '_Z23convWithGPUShMem_kernelPKfS0_PfPK9ConvParamPK13CudaParamType' for 'sm_52'
ptxas info : Function properties for _Z23convWithGPUShMem_kernelPKfS0_PfPK9ConvParamPK13CudaParamType
0 bytes stack frame, 0 bytes spill stores, 0 bytes spill loads
ptxas info : Used 46 registers, 360 bytes cmem[0], 12 bytes cmem[2]

Generated PTXAS Summary for CUDA 12.8 on Ubuntu 20.04 workstation (Producing error):

ptxas info : 0 bytes gmem
ptxas info : Compiling entry function '_Z23convWithGPUShMem_kernelPKfS0_PfPK9ConvParamPK13CudaParamType' for 'sm_52'
ptxas info : Function properties for _Z23convWithGPUShMem_kernelPKfS0_PfPK9ConvParamPK13CudaParamType
0 bytes stack frame, 0 bytes spill stores, 0 bytes spill loads
ptxas info : Used 47 registers, used 1 barriers, 360 bytes cmem[0], 12 bytes cmem[2]
ptxas info : Compile time = 18.168 ms

If anyone has faced this issue please let me know if there are any known workarounds

[sashankku]

You faced a similar issue on the latest released tag: https://github.com/gpgpu-sim/gpgpu-sim_distribution/releases/tag/v4.2.1 ?

[owlxiao]

I’m having the same issue on CUDA 12, with commit a4ce3fe

Extracting specific PTX file named hello.1.sm_52.ptx
Extracting PTX file and ptxas options 1: hello.1.sm_52.ptx -arch=sm_52
GPGPU-Sim PTX: __cudaRegisterFunction _Z6vecAddPfS_S_i : hostFun 0x0x55f9622c0976, fat_cubin_handle = 1
GPGPU-Sim PTX: Parsing hello.1.sm_52.ptx
GPGPU-Sim PTX: instruction assembly for function '_Z6vecAddPfS_S_i'... done.
GPGPU-Sim PTX: finished parsing EMBEDDED .ptx file hello.1.sm_52.ptx
GPGPU-Sim PTX: loading globals with explicit initializers...
GPGPU-Sim PTX: finished loading globals (0 bytes total).
GPGPU-Sim PTX: loading constants with explicit initializers... done.
GPGPU-Sim PTX: Loading PTXInfo from hello.1.sm_52.ptx
GPGPU-Sim: ERROR while parsing output of ptxas (used to capture resource usage information)
GPGPU-Sim: hello.1.sm_52.ptx (hello.1.sm_52.ptxas:5) Syntax error:

ptxas info : Used 8 registers, used 0 barriers, 348 bytes cmem[0]
^

GPGPU-Sim: *** exit detected ***

The original content of the PTXAS file is

ptxas info : 0 bytes gmem
ptxas info : Compiling entry function '_Z6vecAddPfS_S_i' for 'sm_52'
ptxas info : Function properties for _Z6vecAddPfS_S_i
0 bytes stack frame, 0 bytes spill stores, 0 bytes spill loads
ptxas info : Used 8 registers, used 0 barriers, 348 bytes cmem[0]

[owlxiao]

The issue occurred in the PTXAS parser. I manually hacked the parser, and now it works. It seems to be related to the new PTXAS info format in CUDA 12.

ptxas info : Used 8 registers, used 0 barriers, 348 bytes cmem[0]