How to make RF type simulation faster with MULTI-COREs & MULTI-THREADS

Did you try turning on "APS" in the Setup->High Performance Options form? You can control the number of threads that way too.

There's also the option to do parasitic reduction on this form.

Of course, it follows that you should ensure your PSS is set up appropriately too (you didn't give any details).

Regards,

Andrew.

 Dear Andrew,

The query is not for a specific PSS set-up. It is generic. It is about how to exploit the machine resources and speed up  the simulation.

I checked the Setup option in ADE.

But couldn't find the option  "High Performance Options form". I could only see one option called TURBO/Parasitoc Reduction.

What is TURBO. I  TURBO option form I am able to see Multithread option.

The Multicore option is NOT there.

Where I can get APS.

Kind Regards,

Which version of spectre are you using (spectre -W from the command line), and which version of Virtuoso (either "icfb -W" or "virtuoso -W")? I suspect you're using too old versions (Spectre Turbo was an earlier enhancement to spectre and spectreRF to provide some speed up - it's now end of lifed as the functionality is superseded by the APS ("Accelerated Parallel Simulator") option to spectre/spectreRF.

Andrew

Dear Andrew,

I am currently using

 Spectre: sub-version  10.1.1.200.isr13

 icfb: sub-version 5.10.41.500.6.132

Kind Regards,

Your IC version is too old. The high performance form (which replaces the Turbo/Parasitics form) was introduced in 5.10.41.500.6.141 (any later version would be OK too).

Without this you could enter +aps +mt=N on the userCmdLineOption field on Setup->Environment (where N is the number of threads you want - or just +mt if you want it to auto-choose).

Regards,

Andrew.

 Dear Andrew,

Thanks a lot.

Is there any option to use multiple cores of the machine.

Kind Regards,

 Dear Andrew,

I installed the lattest ISR for IC5141.

The spectre version :sub-version 10.1.1.200.isr13

The icfb version:- sub-version 5.10.41.500.6.151

 Now I am getting the desired form for APS.

I have attched the snapshot of the form

It is asking for number of threads & Also process affinity ( is it for Number of cores).

Suppose I have 16 cores then what I should give to exploit all the cores

Do not fill in the process affinity - leave it blank. It's an esoteric option which can potentially give some extra speed, but it has to be used very carefully (the idea is that it allows you to tell the simulator which range of cores you want to "reserve" - the danger is that if you have multiple simulations reserving the same specific core numbers, it can end up being slower, of course). Without this the OS will take care of allocating cores (which may change over time depending on the machine loading).

If you specify the number of threads as "auto", it will pick up to 8 (depending on the machine having that number of cores, and the circuit being large enough to benefit from them). If "manual" you could specify 16 (or whatever number you want).

You should also select "APS" of course.

That's it - very simple.

Andrew.

 Dear Andrew,

Thanks a lot for your reply.

As you see there are thre otions in the form. Spectre, Turbo , APS.

I thinks APS can affect the accuracy.

I used Spectre but it takes maximum 8 cores and 8 threads.

Why spectre is taking maximum 8 cores. 

Can you throw some light on these options.

Kind Regards,