Comments (7)
Perhaps you are using the latest version of NVCC compiler, and GPGPU-sim has not fully implemented all the APIs of CUDA language; Or even if the NVCC version you use is not the latest, but your CUDA executable uses the API that GPGPU-Sim has not yet implemented.
List your experimental environment as much as possible, especially the .cu source code and compiler version.
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See also:
Our implementation of libcudart is not compatible with all versions of cuda because of different interfaces that NVIDIA uses between different versions.
From here.
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@nothingface0
Yes.
When generating the memory accesses in a warp, the sstarr_space
's action is same to shared_space
's.
I will treat it as a shared memory for the time being.
Thank you!
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Hi!
May I ask you a problem about GPGPU-sim:
Among the types of memory space in the
src/abstract_hardware_model.h
file:enum _memory_space_t { undefined_space = 0, reg_space, local_space, shared_space, sstarr_space, <========= HERE param_space_unclassified, param_space_kernel, /* global to all threads in a kernel : read-only */ param_space_local, /* local to a thread : read-writable */ const_space, tex_space, surf_space, global_space, generic_space, instruction_space };, there is such a type called "sstarr_space", but I can't find it in GPGPU-Sim manual and other materials.
Is it the abbreviation of one memory space?
Thanks for your favourable reply.
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@masa-laboratory
I'm not an expert, I'm just a user of GPGPU-Sim, plus I have not really delved into the memory part yet.
I can assume that, since this is used in the ptx
part of the code (cuda-sim
), it's PTX-specific. I found a list of PTX directives here. From the name of the variable, I would assume that it's referring to some array, possible "shared static array"? I have no idea why it would be different to normal shared
memory, though.
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@masa-laboratory sstarr
seems to be related with Tensor Cores, from what I saw here. They mention that it works similarly to shared memory.
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@nothingface0 Thanks!. Have you been reading the source code of GPGPU-Sim?
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