número do multiprocessador de streaming

Question

como sei quantos multiprocessadores de streaming (SM) eu tenho no meu GTS 250?

    

Answer 1

Você pode fazer o download do SDK e executar o deviceQuery

CUDASDK_32 / C / bin / linux / release / deviceQuery

Device 0: "Tesla S2050"
  CUDA Driver Version:                           3.10
  CUDA Runtime Version:                          3.10
  CUDA Capability Major/Minor version number:    2.0
  Total amount of global memory:                 2817982464 bytes

E veja esta linha:

 Multiprocessors x Cores/MP = Cores:  14 (MP) x 32 (Cores/MP) = 448 (Cores)

 Total amount of constant memory:               65536 bytes
  Total amount of shared memory per block:       49152 bytes
  Total number of registers available per block: 32768
  Warp size:                                     32
  Maximum number of threads per block:           1024
  Maximum sizes of each dimension of a block:    1024 x 1024 x 64
  Maximum sizes of each dimension of a grid:     65535 x 65535 x 1
  Maximum memory pitch:                          2147483647 bytes
  Texture alignment:                             512 bytes
  Clock rate:                                    1.15 GHz
  Concurrent copy and execution:                 Yes
  Run time limit on kernels:                     No
  Integrated:                                    No
  Support host page-locked memory mapping:       Yes
  Compute mode:                                  Default (multiple host threads can use this device simultaneously)
  Concurrent kernel execution:                   Yes
  Device has ECC support enabled:                Yes

deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 3.10, CUDA Runtime Version = 3.10, NumDevs = 1, Device = Tesla S2050

    

Answer 2

O GTS 250 possui 16 SMs e 8 núcleos por SM para um total de 128 núcleos CUDA. Esta página da Wikipédia tem contagens centrais para todos os dispositivos GeForce. Para os processadores da série GT200, dividir o número de núcleos por 8 fornece o número de SMs.