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Hardware for Best Simulation Performance?

SteveMarshall

 We are upgrading our workstations and are wondering if Cadence software will gain a performance advantage if processors with Hyperthreading are used. We have to choose between the i7 and i5 processors. Most work done in the lab is corners and monte-carlo analysis of analog circuits, in the Analog Design Environment. The simulator is spectre.

 I am not too hopeful that hyperthreading will give a performance benefit, even to highly parallelized tasks such as Corners analysis, but if it does it would be a huge benefit. If the simulation engine can take advantage of hyperthreading, please let me know.

 

Thanks!

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  • Actually spectre does support limited multithreading. Spectre turbo uses more still.

    However, it's APS which is really taking advantage of multi-core machines.

    I have seen some benefit with using hyperthreading with APS because the threads are not always fully utilized. However with running multiple parallel simulations (such as over corners) you'd generally be better off with real multi-cores rather than hyperthreading because they're much more likely to be able to run flat out at the same time.

    However, I don't personally have much experience of hyper-threaded machines, so don't take my reply as an official recommendation from Cadence - above is just a personal viewpoint.

    Regards,

    Andrew
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  • Actually spectre does support limited multithreading. Spectre turbo uses more still.

    However, it's APS which is really taking advantage of multi-core machines.

    I have seen some benefit with using hyperthreading with APS because the threads are not always fully utilized. However with running multiple parallel simulations (such as over corners) you'd generally be better off with real multi-cores rather than hyperthreading because they're much more likely to be able to run flat out at the same time.

    However, I don't personally have much experience of hyper-threaded machines, so don't take my reply as an official recommendation from Cadence - above is just a personal viewpoint.

    Regards,

    Andrew
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