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how to avoid recompiling ahdlcmi?

freitas

Hello,

I'm running ams simulations under ncsim and every time I reinvoke the simulator the ahdlcmi module libraries are recompiled.

Is there a way to prevent this to happen? In other words, can we use pre-compiled ahdlcmi module libraries, instead? 

 Thanks,

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  • Andrew Beckett

    Although when using APS, you can't disable the compilation (it would be rather odd to request fast simulation algorithms only to purposefully slow down part of the simulation!).

    I have seen an issue at one customer where /usr/bin/mpstat was not installed - this allows it to recognize there are multiple CPUs and do the compilation in parallel if there are multiple things needing compiling - and if missing it can only do them sequentially.

    Another possibility to solve your problem is to use  CDS_AHDLCMI_SIMDB_DIR to point to a common directory. See "spectre -h veriloga" for info on this variable.

    There is a CCR to address the issue with AMS - so you might want to contact customer support.

    Regards,

    Andrew

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  • Andrew Beckett

    Although when using APS, you can't disable the compilation (it would be rather odd to request fast simulation algorithms only to purposefully slow down part of the simulation!).

    I have seen an issue at one customer where /usr/bin/mpstat was not installed - this allows it to recognize there are multiple CPUs and do the compilation in parallel if there are multiple things needing compiling - and if missing it can only do them sequentially.

    Another possibility to solve your problem is to use  CDS_AHDLCMI_SIMDB_DIR to point to a common directory. See "spectre -h veriloga" for info on this variable.

    There is a CCR to address the issue with AMS - so you might want to contact customer support.

    Regards,

    Andrew

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