I recently bought an RTX 3060 TI, and ran some benchmarks to compare it
with my old RTX2080. The results are below:
#RTX 2080
JAC_NPT_4fs = 721 ns/day
FactorIX_NPT_4fs = 243 ns/day
#RTX 3060 TI
JAC_NPT_4fs = 740 ns/day
FactorIX_NPT_4fs = 242 ns/day
I wonder why they have roughly the same performance even though RTX3060 TI
has 4864 cores and RTX2080 has 2944 cores.
>From previous discussions on the list (
http://archive.ambermd.org/202009/0392.html), I found that memory
bandwidths are an important factor in performance. But both bandwidths are
exactly the same (448 GB/s) (according to
https://www.techpowerup.com/):
https://www.techpowerup.com/gpu-specs/geforce-rtx-3060-ti.c3681
https://www.techpowerup.com/gpu-specs/geforce-rtx-2080.c3224
Looking at the output of the "deviceQuery" (see below) I see that the RTX
3060 TI has 38 multiprocessors vs 46 in the RTX 2080. Could this be the
reason for the almost identical performance?
Thank you,
Renato
########################################################
Device 0: "NVIDIA GeForce RTX 2080"
CUDA Driver Version / Runtime Version 11.7 / 11.7
CUDA Capability Major/Minor version number: 7.5
Total amount of global memory: 7981 MBytes (8368816128
bytes)
(46) Multiprocessors, ( 64) CUDA Cores/MP: 2944 CUDA Cores
GPU Max Clock rate: 1710 MHz (1.71 GHz)
Memory Clock rate: 7000 Mhz
Memory Bus Width: 256-bit
L2 Cache Size: 4194304 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: 1024
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 3 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 supports Compute Preemption: Yes
Supports Cooperative Kernel Launch: Yes
Supports MultiDevice Co-op Kernel Launch: Yes
Device PCI Domain ID / Bus ID / location ID: 0 / 175 / 0
################################################
Device 0: "NVIDIA GeForce RTX 3060 TI"
CUDA Driver Version / Runtime Version 11.7 / 11.7
CUDA Capability Major/Minor version number: 8.6
Total amount of global memory: 7981 MBytes (8368357376
bytes)
(38) Multiprocessors, (128) CUDA Cores/MP: 4864 CUDA Cores
GPU Max Clock rate: 1665 MHz (1.66 GHz)
Memory Clock rate: 9501 Mhz
Memory Bus Width: 256-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: 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): (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 supports Compute Preemption: Yes
Supports Cooperative Kernel Launch: Yes
Supports MultiDevice Co-op Kernel Launch: Yes
Device PCI Domain ID / Bus ID / location ID: 0 / 175 / 0
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Received on Tue Feb 28 2023 - 13:30:02 PST
