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.
|
Accuracy-critical computations, such as Farfield calculation, are still performed in double-precision.
|
|
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.