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每个块的CUDA线程数限制_Cuda - Fatal编程技术网

每个块的CUDA线程数限制

每个块的CUDA线程数限制,cuda,Cuda,为什么我不能使用max of螺纹块的最大尺寸(x,y,z):(1024,1024,64)?如果我使用(1024,1024)它不工作,当我使用(32,32)或(1024)等时,它工作。是关于共享内存吗 以下是我从deviceQuery获得的结果: ./deviceQuery Starting... CUDA Device Query (Runtime API) version (CUDART static linking) Detected 3 CUDA Capable device(s)

为什么我不能使用max of
螺纹块的最大尺寸(x,y,z):(1024,1024,64)
?如果我使用
(1024,1024)
它不工作,当我使用
(32,32)
(1024)
等时,它工作。是关于共享内存吗

以下是我从deviceQuery获得的结果:

./deviceQuery Starting...

 CUDA Device Query (Runtime API) version (CUDART static linking)

Detected 3 CUDA Capable device(s)

Device 0: "Tesla M2070"
  CUDA Driver Version / Runtime Version          5.5 / 5.5
  CUDA Capability Major/Minor version number:    2.0
  Total amount of global memory:                 5375 MBytes (5636554752 bytes)
  (14) Multiprocessors, ( 32) CUDA Cores/MP:     448 CUDA Cores
  GPU Clock rate:                                1147 MHz (1.15 GHz)
  Memory Clock rate:                             1566 Mhz
  Memory Bus Width:                              384-bit
  L2 Cache Size:                                 786432 bytes
  Maximum Texture Dimension Size (x,y,z)         1D=(65536), 2D=(65536, 65535), 3D=(2048, 2048, 2048)
  Maximum Layered 1D Texture Size, (num) layers  1D=(16384), 2048 layers
  Maximum Layered 2D Texture Size, (num) layers  2D=(16384, 16384), 2048 layers
  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 multiprocessor:  1536
  Maximum number of threads per block:           1024
  Max dimension size of a thread block (x,y,z): (1024, 1024, 64)
  Max dimension size of a grid size    (x,y,z): (65535, 65535, 65535)
  Maximum memory pitch:                          2147483647 bytes
  Texture alignment:                             512 bytes
  Concurrent copy and kernel execution:          Yes with 2 copy engine(s)
  Run time limit on kernels:                     No
  Integrated GPU sharing Host Memory:            No
  Support host page-locked memory mapping:       Yes
  Alignment requirement for Surfaces:            Yes
  Device has ECC support:                        Enabled
  Device supports Unified Addressing (UVA):      Yes
  Device PCI Bus ID / PCI location ID:           6 / 0
  Compute Mode:
     < Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) >

Device 1: "Tesla M2070"
  CUDA Driver Version / Runtime Version          5.5 / 5.5
  CUDA Capability Major/Minor version number:    2.0
  Total amount of global memory:                 5375 MBytes (5636554752 bytes)
  (14) Multiprocessors, ( 32) CUDA Cores/MP:     448 CUDA Cores
  GPU Clock rate:                                1147 MHz (1.15 GHz)
  Memory Clock rate:                             1566 Mhz
  Memory Bus Width:                              384-bit
  L2 Cache Size:                                 786432 bytes
  Maximum Texture Dimension Size (x,y,z)         1D=(65536), 2D=(65536, 65535), 3D=(2048, 2048, 2048)
  Maximum Layered 1D Texture Size, (num) layers  1D=(16384), 2048 layers
  Maximum Layered 2D Texture Size, (num) layers  2D=(16384, 16384), 2048 layers
  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 multiprocessor:  1536
  Maximum number of threads per block:           1024
  Max dimension size of a thread block (x,y,z): (1024, 1024, 64)
  Max dimension size of a grid size    (x,y,z): (65535, 65535, 65535)
  Maximum memory pitch:                          2147483647 bytes
  Texture alignment:                             512 bytes
  Concurrent copy and kernel execution:          Yes with 2 copy engine(s)
  Run time limit on kernels:                     No
  Integrated GPU sharing Host Memory:            No
  Support host page-locked memory mapping:       Yes
  Alignment requirement for Surfaces:            Yes
  Device has ECC support:                        Enabled
  Device supports Unified Addressing (UVA):      Yes
  Device PCI Bus ID / PCI location ID:           20 / 0
  Compute Mode:
     < Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) >

Device 2: "Tesla M2070"
  CUDA Driver Version / Runtime Version          5.5 / 5.5
  CUDA Capability Major/Minor version number:    2.0
  Total amount of global memory:                 5375 MBytes (5636554752 bytes)
  (14) Multiprocessors, ( 32) CUDA Cores/MP:     448 CUDA Cores
  GPU Clock rate:                                1147 MHz (1.15 GHz)
  Memory Clock rate:                             1566 Mhz
  Memory Bus Width:                              384-bit
  L2 Cache Size:                                 786432 bytes
  Maximum Texture Dimension Size (x,y,z)         1D=(65536), 2D=(65536, 65535), 3D=(2048, 2048, 2048)
  Maximum Layered 1D Texture Size, (num) layers  1D=(16384), 2048 layers
  Maximum Layered 2D Texture Size, (num) layers  2D=(16384, 16384), 2048 layers
  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 multiprocessor:  1536
  Maximum number of threads per block:           1024
  Max dimension size of a thread block (x,y,z): (1024, 1024, 64)
  Max dimension size of a grid size    (x,y,z): (65535, 65535, 65535)
  Maximum memory pitch:                          2147483647 bytes
  Texture alignment:                             512 bytes
  Concurrent copy and kernel execution:          Yes with 2 copy engine(s)
  Run time limit on kernels:                     No
  Integrated GPU sharing Host Memory:            No
  Support host page-locked memory mapping:       Yes
  Alignment requirement for Surfaces:            Yes
  Device has ECC support:                        Enabled
  Device supports Unified Addressing (UVA):      Yes
  Device PCI Bus ID / PCI location ID:           17 / 0
  Compute Mode:
     < Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) >
> Peer access from Tesla M2070 (GPU0) -> Tesla M2070 (GPU1) : No
> Peer access from Tesla M2070 (GPU0) -> Tesla M2070 (GPU2) : No
> Peer access from Tesla M2070 (GPU1) -> Tesla M2070 (GPU1) : No
> Peer access from Tesla M2070 (GPU1) -> Tesla M2070 (GPU2) : Yes
> Peer access from Tesla M2070 (GPU1) -> Tesla M2070 (GPU0) : No
> Peer access from Tesla M2070 (GPU1) -> Tesla M2070 (GPU1) : No
> Peer access from Tesla M2070 (GPU2) -> Tesla M2070 (GPU0) : No
> Peer access from Tesla M2070 (GPU2) -> Tesla M2070 (GPU1) : Yes

deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 5.5, CUDA Runtime Version = 5.5, NumDevs = 3, Device0 = Tesla M2070, Device1 = Tesla M2070, Device2 = Tesla M2070
Result = PASS
/deviceQuery正在启动。。。
CUDA设备查询(运行时API)版本(CUDART静态链接)
检测到3个支持CUDA的设备
设备0:“特斯拉M2070”
CUDA驱动程序版本/运行时版本5.5/5.5
CUDA能力主要/次要版本号:2.0
全局内存总量:5375 MB(5636554752字节)
(14) 多处理器,(32)CUDA内核/MP:448个CUDA内核
GPU时钟频率:1147 MHz(1.15 GHz)
内存时钟频率:1566MHz
内存总线宽度:384位
二级缓存大小:786432字节
最大纹理尺寸大小(x,y,z)1D=(65536),2D=(6553665535),3D=(204820482048)
最大分层1D纹理大小,(num)层1D=(16384),2048层
最大分层2D纹理大小,(num)层2D=(16384,16384),2048层
恒定内存总量:65536字节
每个块的共享内存总量:49152字节
每个块可用的寄存器总数:32768
经纱尺寸:32
每个多处理器的最大线程数:1536
每个块的最大线程数:1024
螺纹块的最大尺寸(x、y、z):(1024、1024、64)
栅格尺寸的最大尺寸(x、y、z):(65535、65535、65535)
最大内存间距:2147483647字节
纹理对齐:512字节
并发复制和内核执行:有2个复制引擎
内核的运行时间限制:否
集成GPU共享主机内存:否
支持主机页锁定内存映射:是
表面对齐要求:是
设备具有ECC支持:已启用
设备支持统一寻址(UVA):是
设备PCI总线ID/PCI位置ID:6/0
计算模式:

装置1:“特斯拉M2070”
CUDA驱动程序版本/运行时版本5.5/5.5
CUDA能力主要/次要版本号:2.0
全局内存总量:5375 MB(5636554752字节)
(14) 多处理器,(32)CUDA内核/MP:448个CUDA内核
GPU时钟频率:1147 MHz(1.15 GHz)
内存时钟频率:1566MHz
内存总线宽度:384位
二级缓存大小:786432字节
最大纹理尺寸大小(x,y,z)1D=(65536),2D=(6553665535),3D=(204820482048)
最大分层1D纹理大小,(num)层1D=(16384),2048层
最大分层2D纹理大小,(num)层2D=(16384,16384),2048层
恒定内存总量:65536字节
每个块的共享内存总量:49152字节
每个块可用的寄存器总数:32768
经纱尺寸:32
每个多处理器的最大线程数:1536
每个块的最大线程数:1024
螺纹块的最大尺寸(x、y、z):(1024、1024、64)
栅格尺寸的最大尺寸(x、y、z):(65535、65535、65535)
最大内存间距:2147483647字节
纹理对齐:512字节
并发复制和内核执行:有2个复制引擎
内核的运行时间限制:否
集成GPU共享主机内存:否
支持主机页锁定内存映射:是
表面对齐要求:是
设备具有ECC支持:已启用
设备支持统一寻址(UVA):是
设备PCI总线ID/PCI位置ID:20/0
计算模式:

装置2:“特斯拉M2070”
CUDA驱动程序版本/运行时版本5.5/5.5
CUDA能力主要/次要版本号:2.0
全局内存总量:5375 MB(5636554752字节)
(14) 多处理器,(32)CUDA内核/MP:448个CUDA内核
GPU时钟频率:1147 MHz(1.15 GHz)
内存时钟频率:1566MHz
内存总线宽度:384位
二级缓存大小:786432字节
最大纹理尺寸大小(x,y,z)1D=(65536),2D=(6553665535),3D=(204820482048)
最大分层1D纹理大小,(num)层1D=(16384),2048层
最大分层2D纹理大小,(num)层2D=(16384,16384),2048层
恒定内存总量:65536字节
每个块的共享内存总量:49152字节
每个块可用的寄存器总数:32768
经纱尺寸:32
每个多处理器的最大线程数:1536
每个块的最大线程数:1024
螺纹块的最大尺寸(x、y、z):(1024、1024、64)
栅格尺寸的最大尺寸(x、y、z):(65535、65535、65535)
最大内存间距:2147483647字节
纹理对齐:512字节
并发复制和内核执行:有2个复制引擎
内核的运行时间限制:否
集成GPU共享主机内存:否
支持主机页锁定内存映射:是
表面对准要求:
Maximum number of threads per block:           1024