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Dr Donald Kinghorn (Scientific Computing Advisor)

NVIDIA Titan GPUs (3 generations) - CUDA 8 rc performance on Ubuntu 16.04

Written on August 12, 2016 by Dr Donald Kinghorn
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We've got a quick test of CUDA performance on three generations of NVIDIA's Titan X GPU's for you. NVIDA released the Pascal GeForce Titan X much earlier than people were expecting (including NVIDIA :-). Just like the older Titan cards the new Pascal based card did not disappoint! For comparison we have a GTX 1080 in the mix too.

This is just a brief look at performance using the nbody code from the CUDA samples and a Molecular Dynamics simulation (stmv)using NAMD.

The short story is -- the Titan X (Pascal) is an amazing video card and CUDA compute performance is stunning!

The setup for this testing is Ubuntu 16.04 with CUDA 8.0 RC ( as of the date of this writing you need to be an NVIDIA registered developer to access the release candidate. ) The NVIDIA display driver is 367.35 from the "Graphics-Drivers ppa"

Base systems

The Peak Tower Single
CPU: Intel Core-i7 6900K 8-core @ 3.2GHz (3.5GHz All-Core-Turbo)
Memory: 64 GB DDR4 2133MHz Reg ECC
PCIe: (4) X16-X16 v3
The Peak Tower Quad
CPU: (4) Intel Xeon E7 8867v3 16-core @ 2.5GHz (2.7GHz All-Core-Turbo)
Memory: 512 GB DDR4 2133GHz Reg ECC
PCIe: (4) X16-X16 v3

Note: The Quad was used for NAMD for two reasons: 1) I had it on the bench and 2) The GPU's are so fast that I wanted lots of CPU performance so we could see the difference between the GPU's! (I'm also using some older v3 CPU's we use E5/E7 v4 in our current Quad builds)

Video cards used for testing. ( data from nvidia-smi )

Card CUDA cores GPU clock MHz Memory clock MHz* Application clock MHz** FB Memory MiB
Titan X (Pascal) 3584 1911 5005 1417 12186
TITAN X (Maxwell) 3072 1392 3505 1000 12206
Titan Black 2880 1202 3500 888 6082
GTX 1080 2560 1911 5005 1607 8113

Results

Card nbody single precision GFLOP/s NAMD run time (sec)NAMD day/ns
Titan X (Pascal) 7507410.570
TITAN X (Maxwell) 4292550.889
Titan Black 2302811.460
GTX 1080 5429480.709

Notes:
nbody -benchmark -numbodies=256000 -device= {one of (0,1,2,3)}
namd2 +p 64 +setcpuaffinity stmv.namd
This is more CPU cores than needed for balance with the GPU but I wanted the GPU to be performance limiting.

I'm looking forward to setting up NVIDIA DIGITS 4 (just released to developers) and seeing what kind performance we see with training sets on Caffe using the new Titan X.

Extra data ... if you like that sort of thing

kinghorn@u16ps:~/testing/samples-8.0/bin/x86_64/linux/release$ ./bandwidthTest 0
[CUDA Bandwidth Test] - Starting...
Running on...

 Device 0: TITAN X
 Quick Mode

 Host to Device Bandwidth, 1 Device(s)
 PINNED Memory Transfers
   Transfer Size (Bytes)	Bandwidth(MB/s)
   33554432			11853.2

 Device to Host Bandwidth, 1 Device(s)
 PINNED Memory Transfers
   Transfer Size (Bytes)	Bandwidth(MB/s)
   33554432			12854.1

 Device to Device Bandwidth, 1 Device(s)
 PINNED Memory Transfers
   Transfer Size (Bytes)	Bandwidth(MB/s)
   33554432			342979.6

Result = PASS

NOTE: The CUDA Samples are not meant for performance measurements. Results may vary when GPU Boost is enabled.


kinghorn@u16ps:~/testing/samples-8.0/bin/x86_64/linux/release$ ./deviceQuery
./deviceQuery Starting...

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

Detected 4 CUDA Capable device(s)

Device 0: "TITAN X"
  CUDA Driver Version / Runtime Version          8.0 / 8.0
  CUDA Capability Major/Minor version number:    6.1
  Total amount of global memory:                 12186 MBytes (12778274816 bytes)
  (28) Multiprocessors, (128) CUDA Cores/MP:     3584 CUDA Cores
  GPU Max Clock rate:                            1531 MHz (1.53 GHz)
  Memory Clock rate:                             5005 Mhz
  Memory Bus Width:                              384-bit
  L2 Cache Size:                                 3145728 bytes
  Maximum Texture Dimension Size (x,y,z)         1D=(131072), 2D=(131072, 65536), 3D=(16384, 16384, 16384)
  Maximum Layered 1D Texture Size, (num) layers  1D=(32768), 2048 layers
  Maximum Layered 2D Texture Size, (num) layers  2D=(32768, 32768), 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: 65536
  Warp size:                                     32
  Maximum number of threads per multiprocessor:  2048
  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): (2147483647, 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:                     Yes
  Integrated GPU sharing Host Memory:            No
  Support host page-locked memory mapping:       Yes
  Alignment requirement for Surfaces:            Yes
  Device has ECC support:                        Disabled
  Device supports Unified Addressing (UVA):      Yes
  Device PCI Domain ID / Bus ID / location ID:   0 / 5 / 0
  Compute Mode:
     - Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) -

Device 1: "GeForce GTX TITAN Black"
  CUDA Driver Version / Runtime Version          8.0 / 8.0
  CUDA Capability Major/Minor version number:    3.5
  Total amount of global memory:                 6082 MBytes (6377439232 bytes)
  (15) Multiprocessors, (192) CUDA Cores/MP:     2880 CUDA Cores
  GPU Max Clock rate:                            980 MHz (0.98 GHz)
  Memory Clock rate:                             3500 Mhz
  Memory Bus Width:                              384-bit
  L2 Cache Size:                                 1572864 bytes
  Maximum Texture Dimension Size (x,y,z)         1D=(65536), 2D=(65536, 65536), 3D=(4096, 4096, 4096)
  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: 65536
  Warp size:                                     32
  Maximum number of threads per multiprocessor:  2048
  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): (2147483647, 65535, 65535)
  Maximum memory pitch:                          2147483647 bytes
  Texture alignment:                             512 bytes
  Concurrent copy and kernel execution:          Yes with 1 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:                        Disabled
  Device supports Unified Addressing (UVA):      Yes
  Device PCI Domain ID / Bus ID / location ID:   0 / 9 / 0
  Compute Mode:
     - Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) -

Device 2: "GeForce GTX TITAN X"
  CUDA Driver Version / Runtime Version          8.0 / 8.0
  CUDA Capability Major/Minor version number:    5.2
  Total amount of global memory:                 12207 MBytes (12799574016 bytes)
  (24) Multiprocessors, (128) CUDA Cores/MP:     3072 CUDA Cores
  GPU Max Clock rate:                            1076 MHz (1.08 GHz)
  Memory Clock rate:                             3505 Mhz
  Memory Bus Width:                              384-bit
  L2 Cache Size:                                 3145728 bytes
  Maximum Texture Dimension Size (x,y,z)         1D=(65536), 2D=(65536, 65536), 3D=(4096, 4096, 4096)
  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: 65536
  Warp size:                                     32
  Maximum number of threads per multiprocessor:  2048
  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): (2147483647, 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:                        Disabled
  Device supports Unified Addressing (UVA):      Yes
  Device PCI Domain ID / Bus ID / location ID:   0 / 6 / 0
  Compute Mode:
     - Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) -

Device 3: "GeForce GTX 1080"
  CUDA Driver Version / Runtime Version          8.0 / 8.0
  CUDA Capability Major/Minor version number:    6.1
  Total amount of global memory:                 8113 MBytes (8507555840 bytes)
  (20) Multiprocessors, (128) CUDA Cores/MP:     2560 CUDA Cores
  GPU Max Clock rate:                            1734 MHz (1.73 GHz)
  Memory Clock rate:                             5005 Mhz
  Memory Bus Width:                              256-bit
  L2 Cache Size:                                 2097152 bytes
  Maximum Texture Dimension Size (x,y,z)         1D=(131072), 2D=(131072, 65536), 3D=(16384, 16384, 16384)
  Maximum Layered 1D Texture Size, (num) layers  1D=(32768), 2048 layers
  Maximum Layered 2D Texture Size, (num) layers  2D=(32768, 32768), 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: 65536
  Warp size:                                     32
  Maximum number of threads per multiprocessor:  2048
  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): (2147483647, 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:                        Disabled
  Device supports Unified Addressing (UVA):      Yes
  Device PCI Domain ID / Bus ID / location ID:   0 / 10 / 0
  Compute Mode:
     - Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) -
> Peer access from TITAN X (GPU0) -> GeForce GTX TITAN Black (GPU1) : No
> Peer access from TITAN X (GPU0) -> GeForce GTX TITAN X (GPU2) : No
> Peer access from TITAN X (GPU0) -> GeForce GTX 1080 (GPU3) : No
> Peer access from GeForce GTX TITAN Black (GPU1) -> TITAN X (GPU0) : No
> Peer access from GeForce GTX TITAN Black (GPU1) -> GeForce GTX TITAN X (GPU2) : No
> Peer access from GeForce GTX TITAN Black (GPU1) -> GeForce GTX 1080 (GPU3) : No
> Peer access from GeForce GTX TITAN X (GPU2) -> TITAN X (GPU0) : No
> Peer access from GeForce GTX TITAN X (GPU2) -> GeForce GTX TITAN Black (GPU1) : No
> Peer access from GeForce GTX TITAN X (GPU2) -> GeForce GTX 1080 (GPU3) : No
> Peer access from GeForce GTX 1080 (GPU3) -> TITAN X (GPU0) : No
> Peer access from GeForce GTX 1080 (GPU3) -> GeForce GTX TITAN Black (GPU1) : No
> Peer access from GeForce GTX 1080 (GPU3) -> GeForce GTX TITAN X (GPU2) : No

deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 8.0, CUDA Runtime Version = 8.0, NumDevs = 4, Device0 = TITAN X, Device1 = GeForce GTX TITAN Black, Device2 = GeForce GTX TITAN X, Device3 = GeForce GTX 1080
Result = PASS

Happy computing --dbk

Tags: NVIDIA, CUDA, Pascal GPU, Linux
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