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What is license feature "Virtuoso_Spectre_GXL_MMSIM_Lk", and how to use it?

dontpanic

Hi there! Checking the license usage at my site (lmstat output) I find situations like the following for the spectre licenses:

Virtuoso_Multi_mode_Simulation      licenses: 180    used: 159    free: 21
Virtuoso_Spectre_GXL_MMSIM_Lk    licenses: 180    used: 11    free: 169

Al my simulations seem to check out only the "Virtuoso_Multi_mode_Simulation" feature, so I am wondering, what are all those "Virtuoso_Spectre_GXL_MMSIM_Lk" unused licenses? Is there a way I can tell ADE/ADE-XL to use those instead of "Virtuoso_Multi_mode_Simulation"? Often I have a hard time finding enough licenses (a couple of corners for and ADC (using APS) seem to easily check out several tenths of licenses!), so using these instead would be a big help!

Thanks and regards,

Jorge.



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  • Andrew Beckett

    Jorge,

    Don't get excited - this is a special tracking license which actually is no longer used in current versions. For various nasty accounting reasons, whenever a new product is added to what is accessible from a token-based product such as the Virtuoso Multi-Mode Simulation capability, we have to upgrade that product to a new product. That's why there has been a sequence of such products over the years - product 90001, 90002, etc. Back when 90002 was introduced in 2008, it incorporated then (then) new Spectre GXL capability (which was Spectre, SpectreRF and Spectre Turbo, including parasitic reduction). Because we were not allowed to give that to existing customers (at the time) who had the 90001 product without breaking contract rules, what we do is keep the main license feature the same (which ensures compatibility with older releases) but introduce a "lock" license like this. 

    What then happens is that when using the new product via the MMSIM tokens, it checks out both the MMSIM token and an equivalent number of these "lock" licenses. You cannot use the lock licenses on their own - they have to be checked out in conjunction with an MMSIM token.

    After a period of releases we stop checking these lock licenses in order to minimise license checkout time, because there would be nobody who still had the old 90001 product that hadn't updated to 90002 or newer. 

    Because of that, you end up with these unused license features sitting in your pool, just in case  you went back and ran MMSIM70/MMSIM71 or similar vintage, when they could well get checked out still.

    So you don't have spare unused real licenses, sorry!

    Andrew.

Reply
  • Andrew Beckett

    Jorge,

    Don't get excited - this is a special tracking license which actually is no longer used in current versions. For various nasty accounting reasons, whenever a new product is added to what is accessible from a token-based product such as the Virtuoso Multi-Mode Simulation capability, we have to upgrade that product to a new product. That's why there has been a sequence of such products over the years - product 90001, 90002, etc. Back when 90002 was introduced in 2008, it incorporated then (then) new Spectre GXL capability (which was Spectre, SpectreRF and Spectre Turbo, including parasitic reduction). Because we were not allowed to give that to existing customers (at the time) who had the 90001 product without breaking contract rules, what we do is keep the main license feature the same (which ensures compatibility with older releases) but introduce a "lock" license like this. 

    What then happens is that when using the new product via the MMSIM tokens, it checks out both the MMSIM token and an equivalent number of these "lock" licenses. You cannot use the lock licenses on their own - they have to be checked out in conjunction with an MMSIM token.

    After a period of releases we stop checking these lock licenses in order to minimise license checkout time, because there would be nobody who still had the old 90001 product that hadn't updated to 90002 or newer. 

    Because of that, you end up with these unused license features sitting in your pool, just in case  you went back and ran MMSIM70/MMSIM71 or similar vintage, when they could well get checked out still.

    So you don't have spare unused real licenses, sorry!

    Andrew.

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