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Ansys Mechanical Benchmarks Comparing GPU Performance of NVIDIA RTX 6000 vs Tesla V100S vs CPU Only
April 21, 2020
34 min read
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In this blog, we examine Benchmark results for Ansys Mechanical on NVIDIA GPUs. According to Ansys: "Ansys benchmarks provide comprehensive and fair comparative information concerning the performance of Ansys solvers on available hardware platforms. The benchmarks can be used to compare the performance of different hardware platforms when running Ansys solvers. To accomplish this goal, Ansys provides the suite of simulation cases that make up the Ansys benchmark suite to its hardware partners for their use in benchmarking hardware performance; then the data is reported to Ansys and compiled for this site. Cases are selected to represent typical usage and cover a range of mesh sizes and physical models."

Key Findings

  1. Tesla V100S has nearly 2x better performance on models (V19sp-X) using sparse solver due to its higher FP64 performance.
  2. V100S performance is almost 2x better than RTX 6000/8000 in some cases (V19sp-X cases).
  3. Besides GPU, high core count CPU is playing an essential role in Ansys application performance. In some cases, a sole high core count processor even outperforms a solution with CPU + GPU acceleration. e.g. 2x Gold 6252 24C vs 2x 6256 12C + V100S.

System Specifications

Exxact Ansys Certified Rack-mountable Workstation - CPU: 2x Intel Xeon Gold 6256 3.60 GHz 12-Core CPUs, HT Off. GPU: NVIDIA Quadro V100S*, NVIDIA Quadro RTX 6000 Mem: 512GB RAM. Cent OS 7.7.1908 64-bit.

*NVIDIA Tesla V100S is passively cooled and recommended only if used in a rack-mounted configuration for this type of workstation.

Ansys 2019 R2 Test Cases

  • Power Supply Module (V19cg-1)
  • Tractor Rear Axle (V19cg-2)
  • Engine Block (V19cg-3)
  • Gear Box (V19ln-1)
  • Radial Impeller (V19ln-2)
  • Peltier Cooling Block (V19sp-1)
  • Semi-Submersible (V19sp-2)
  • Speaker (V19sp-3)
  • Turbine (V19sp-4)
  • BGA (V19sp-5)

Notes

The benchmarks have been designed to run in about 48 hours on current generation hardware with at least 128 GB of RAM. If changes are made when running these benchmarks, for example, to run more variations of cores, if the benchmarks are run on older/slower hardware, or if hardware with less than 128GB of physical memory is used, then longer runtimes can be expected

Ansys Benchmarks

Ansys Mechanical Run Time Benchmark: NVIDIA Tesla V100S vs Quadro RTX 6000 vs CPU Only


CasesTesla V100SQuadro RTX 6000CPU Only
V19cg-1158
187
406
V19cg-2
181
224
323
V19cg-3
200
232
394
V19ln-1
158
202
298
V19ln-2
123
262
412
V19sp-1
92
177
274
V19sp-2
181
297
508
V19sp-3
117
205
309
V19sp-4
72
152
244
V19sp-5
98
205
322


Ansys Benchmarks - Mechanical Core Solver Rating: NVIDIA Tesla V100S vs Quadro RTX 6000 vs CPU Only


Tesla V100S
Quadro RTX 6000
CPU Only
V19cg-1
902.82
734.07
273.24
V19cg-2
751.30
568.05
360.90
V19cg-3
674.47
544.42
283.00
V19ln-1
734.07
529.74
343.27
V19ln-2
799.26
350.37
216.22
V19sp-1
1102.04
528.44
330.28
V19sp-2
541.35
313.16
176.98
V19sp-3
64.36
24.07
14.68
V19sp-4
58.78
22.45
13.07
V19sp-5
31.91
12.64
7.58


Power Supply Module (V19cg-1)

Analysis TypeSteady State Thermal
Number of Degrees of Freedom
5,300,000
Equation Solver
JCG
Matrix
Symmetric


Tractor Rear Axle (V19cg-2)

Analysis TypeSteady Linear Thermal
Number of Degrees of Freedom
12,300,000
Equation Solver
PCG
Matrix
Symmetric


Engine Block (V19cg-3)

Analysis TypeStatic Linear Structural
Number of Degrees of Freedom
14,200,000
Equation Solver
PCG
Matrix
Symmetric


Gear Box (V19ln-1)

Analysis TypeModal Structural
Number of Degrees of Freedom
7,700,000
Equation Solver
PCG
Matrix
Symmetric


Radial Impeller (V19ln-2)

Analysis TypeModal - Cyclic Symmetry, Structural
Number of Degrees of Freedom
2,000,000
Equation Solver
Block Lanczos
Matrix
Symmetric

Peltier Cooling Block (V19sp-1)

Analysis TypeStatic Nonlinear Thermal-Electric Coupled Field
Number of Degrees of Freedom
650,000
Equation Solver
Sparse
Matrix
Non-symmetric (Unsymmetric)


Semi-Submersible (V19sp-2)

Analysis Type

Transient Nonlinear Structural

Number of Degrees of Freedom4,700,000
Equation Solver
Sparse
Matrix
Non-symmetric (Unsymmetric)


Speaker (V19sp-3)

Analysis TypeHarmonic Linear Structural
Number of Degrees of Freedom
1,700,000
Equation Solver
Sparse
Matrix
Non-symmetric (Unsymmetric)


Turbine (V19sp-4)

Analysis TypeStatic Nonlinear Structural
Number of Degrees of Freedom
3,200,000
Equation Solver
Sparse
Matrix
Symmetric


BGA (V19sp-5)

Analysis TypeStatic Nonlinear Structural
Number of Degrees of Freedom
6,000,000
Equation Solver
Sparse
Matrix
Symmetric


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Benchmarks
Ansys Mechanical Benchmarks Comparing GPU Performance of NVIDIA RTX 6000 vs Tesla V100S vs CPU Only
April 21, 2020 34 min read

In this blog, we examine Benchmark results for Ansys Mechanical on NVIDIA GPUs. According to Ansys: "Ansys benchmarks provide comprehensive and fair comparative information concerning the performance of Ansys solvers on available hardware platforms. The benchmarks can be used to compare the performance of different hardware platforms when running Ansys solvers. To accomplish this goal, Ansys provides the suite of simulation cases that make up the Ansys benchmark suite to its hardware partners for their use in benchmarking hardware performance; then the data is reported to Ansys and compiled for this site. Cases are selected to represent typical usage and cover a range of mesh sizes and physical models."

Key Findings

  1. Tesla V100S has nearly 2x better performance on models (V19sp-X) using sparse solver due to its higher FP64 performance.
  2. V100S performance is almost 2x better than RTX 6000/8000 in some cases (V19sp-X cases).
  3. Besides GPU, high core count CPU is playing an essential role in Ansys application performance. In some cases, a sole high core count processor even outperforms a solution with CPU + GPU acceleration. e.g. 2x Gold 6252 24C vs 2x 6256 12C + V100S.

System Specifications

Exxact Ansys Certified Rack-mountable Workstation - CPU: 2x Intel Xeon Gold 6256 3.60 GHz 12-Core CPUs, HT Off. GPU: NVIDIA Quadro V100S*, NVIDIA Quadro RTX 6000 Mem: 512GB RAM. Cent OS 7.7.1908 64-bit.

*NVIDIA Tesla V100S is passively cooled and recommended only if used in a rack-mounted configuration for this type of workstation.

Ansys 2019 R2 Test Cases

  • Power Supply Module (V19cg-1)
  • Tractor Rear Axle (V19cg-2)
  • Engine Block (V19cg-3)
  • Gear Box (V19ln-1)
  • Radial Impeller (V19ln-2)
  • Peltier Cooling Block (V19sp-1)
  • Semi-Submersible (V19sp-2)
  • Speaker (V19sp-3)
  • Turbine (V19sp-4)
  • BGA (V19sp-5)

Notes

The benchmarks have been designed to run in about 48 hours on current generation hardware with at least 128 GB of RAM. If changes are made when running these benchmarks, for example, to run more variations of cores, if the benchmarks are run on older/slower hardware, or if hardware with less than 128GB of physical memory is used, then longer runtimes can be expected

Ansys Benchmarks

Ansys Mechanical Run Time Benchmark: NVIDIA Tesla V100S vs Quadro RTX 6000 vs CPU Only


CasesTesla V100SQuadro RTX 6000CPU Only
V19cg-1158
187
406
V19cg-2
181
224
323
V19cg-3
200
232
394
V19ln-1
158
202
298
V19ln-2
123
262
412
V19sp-1
92
177
274
V19sp-2
181
297
508
V19sp-3
117
205
309
V19sp-4
72
152
244
V19sp-5
98
205
322


Ansys Benchmarks - Mechanical Core Solver Rating: NVIDIA Tesla V100S vs Quadro RTX 6000 vs CPU Only


Tesla V100S
Quadro RTX 6000
CPU Only
V19cg-1
902.82
734.07
273.24
V19cg-2
751.30
568.05
360.90
V19cg-3
674.47
544.42
283.00
V19ln-1
734.07
529.74
343.27
V19ln-2
799.26
350.37
216.22
V19sp-1
1102.04
528.44
330.28
V19sp-2
541.35
313.16
176.98
V19sp-3
64.36
24.07
14.68
V19sp-4
58.78
22.45
13.07
V19sp-5
31.91
12.64
7.58


Power Supply Module (V19cg-1)

Analysis TypeSteady State Thermal
Number of Degrees of Freedom
5,300,000
Equation Solver
JCG
Matrix
Symmetric


Tractor Rear Axle (V19cg-2)

Analysis TypeSteady Linear Thermal
Number of Degrees of Freedom
12,300,000
Equation Solver
PCG
Matrix
Symmetric


Engine Block (V19cg-3)

Analysis TypeStatic Linear Structural
Number of Degrees of Freedom
14,200,000
Equation Solver
PCG
Matrix
Symmetric


Gear Box (V19ln-1)

Analysis TypeModal Structural
Number of Degrees of Freedom
7,700,000
Equation Solver
PCG
Matrix
Symmetric


Radial Impeller (V19ln-2)

Analysis TypeModal - Cyclic Symmetry, Structural
Number of Degrees of Freedom
2,000,000
Equation Solver
Block Lanczos
Matrix
Symmetric

Peltier Cooling Block (V19sp-1)

Analysis TypeStatic Nonlinear Thermal-Electric Coupled Field
Number of Degrees of Freedom
650,000
Equation Solver
Sparse
Matrix
Non-symmetric (Unsymmetric)


Semi-Submersible (V19sp-2)

Analysis Type

Transient Nonlinear Structural

Number of Degrees of Freedom4,700,000
Equation Solver
Sparse
Matrix
Non-symmetric (Unsymmetric)


Speaker (V19sp-3)

Analysis TypeHarmonic Linear Structural
Number of Degrees of Freedom
1,700,000
Equation Solver
Sparse
Matrix
Non-symmetric (Unsymmetric)


Turbine (V19sp-4)

Analysis TypeStatic Nonlinear Structural
Number of Degrees of Freedom
3,200,000
Equation Solver
Sparse
Matrix
Symmetric


BGA (V19sp-5)

Analysis TypeStatic Nonlinear Structural
Number of Degrees of Freedom
6,000,000
Equation Solver
Sparse
Matrix
Symmetric


You May Also Be Interested In

Contact us - Ansys Benchmarks





Free Resources

Browse our whitepapers, e-books, case studies, and reference architecture.

Explore