Difference between revisions of "EM.Tempo Acceleration"
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| − | + | {{version|14.8+}} | |
| + | [[Image:FDTD58.png|thumb|300px|right|[[FDTD Module]]'s Engine Settings dialog]] | ||
[[EM.Tempo]] presents three different options for acceleration. Some details about each of the options are discussed below: | [[EM.Tempo]] presents three different options for acceleration. Some details about each of the options are discussed below: | ||
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{{note|If [[EM.Cube]] determines your system does not have the appropriate SIMD facilities to effectively run the single-precision solver, the double-precision solver will be run automatically.}} | {{note|If [[EM.Cube]] determines your system does not have the appropriate SIMD facilities to effectively run the single-precision solver, the double-precision solver will be run automatically.}} | ||
*'''Double-Precision Solver:''' [[EM.Tempo]]'s double-precision engine is also multi-threaded, and is slightly more accurate in some cases. It does not take advantage of any available SIMD facilities, which makes it a very portable solver. | *'''Double-Precision Solver:''' [[EM.Tempo]]'s double-precision engine is also multi-threaded, and is slightly more accurate in some cases. It does not take advantage of any available SIMD facilities, which makes it a very portable solver. | ||
| − | *'''GPU Solver:''' | + | |
| + | *'''GPU Solver:''' [[EM.Tempo]]'s GPU solver is a CUDA-based engine which is capable of extreme performance (speedup of up to 40x). | ||
| − | {{note| | + | {{note|Before attempting to use [[EM.Tempo]]'s GPU engine, please make sure all drivers are up to date.}} |
| − | {{note| | + | {{note|It is critical to have the right environment to efficiently use the GPU solver. For immediate help, please contact collaborate@emagtech.com}} |
===Thread Factor=== | ===Thread Factor=== | ||
| − | + | The thread factor determines how many threads are effectively used in the computation. It is only relevant for CPU-based solvers. While a thread factor of two or three usually yields the best performance, it is suggested that the user experiment to find the best thread factor for his/her system. | |
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{{FDTD Details}} | {{FDTD Details}} | ||
Latest revision as of 16:03, 29 August 2014
| This content is relevant for EM.Cube: | 14.8+ |
EM.Tempo presents three different options for acceleration. Some details about each of the options are discussed below:
- Single-Precision Solver: EM.Tempo's single-precision solver is a multi-threaded FDTD engine which also takes advantage of modern SIMD facilities (e.g. Intel AVX) found on most processors. It trades a slight reduction in overall accuracy for a relatively large boost in performance.
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Accuracy-critical computations, such as Farfield calculation, are still performed in double-precision. |
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If EM.Cube determines your system does not have the appropriate SIMD facilities to effectively run the single-precision solver, the double-precision solver will be run automatically. |
- Double-Precision Solver: EM.Tempo's double-precision engine is also multi-threaded, and is slightly more accurate in some cases. It does not take advantage of any available SIMD facilities, which makes it a very portable solver.
- GPU Solver: EM.Tempo's GPU solver is a CUDA-based engine which is capable of extreme performance (speedup of up to 40x).
| |
Before attempting to use EM.Tempo's GPU engine, please make sure all drivers are up to date. |
| |
It is critical to have the right environment to efficiently use the GPU solver. For immediate help, please contact collaborate@emagtech.com |
Thread Factor
The thread factor determines how many threads are effectively used in the computation. It is only relevant for CPU-based solvers. While a thread factor of two or three usually yields the best performance, it is suggested that the user experiment to find the best thread factor for his/her system.
