Maestro: Start another simulation while one is already running

Dear HoWei,

This may be a silly question, but have you set the simulation sets to run in parallel in lieu of in series? If they are set to run in series, then the behavior you are observing is exactly how Assembler or Explorer will behave when a second simulation set is submitted and the first set is still running.

To change the simulation option to “parallel”, under the menu item Options->Run Options, as shown in Figure 1, the resulting panel, shown in Figure 2, allows you to select the “parallel” option.

Shawn

Figure 1

Figure 2

Shawn,

You beat me to it. I would say that if you pick "parallel" mode, it's a very wise idea to make sure that in your job policy settings, at the bottom, you have the Multiple Runs section set to Wait until currently running points complete. Otherwise adding new jobs has this irritating (I think very bad) way of killing existing jobs sometimes and fairly sharing amongst the new requests. 

Note too that the new "LSCS" mode in the job policy that was introduced in later IC618/ICADVM181 versions will also allow spare capacity to be used for new jobs even if you're in series mode, and also doesn't have this evil Reassign immediately for new run choice for multiple runs.

Andrew.

Dear Andrew,

I will never be capable of “beating you to it”!!

In addition to the helpful (albeit undesirable) comment you added, an additional comment that is worth noting if you are running jobs in parallel, and your second simulation set changes the views of any subcircuits in your design to create a netlist, any netlist that is created in your initial running simulation set will also be changed unless you are using a reference netlist or have the appropriate environmental variable set to prevent this from occurring .

Shawn

Dear Andrew,

I will never be capable of “beating you to it”!!

In addition to the helpful (albeit undesirable) comment you added, an additional comment that is worth noting if you are running jobs in parallel, and your second simulation set changes the views of any subcircuits in your design to create a netlist, any netlist that is created in your initial running simulation set will also be changed unless you are using a reference netlist or have the appropriate environmental variable set to prevent this from occurring .

Shawn

Dear HoWei,

As a bit of added information to complete my prior comment, the environmental variable to set in your .cdsinit file to prevent any changes you make in the netlist from impacting a prior simulation set you submitted (which must be entered before your first simulation set was started) is:

envSetVal("adexl.simulation" "ignoreDesignChangesDuringRun" 'boolean t)   //This variable is set to NIL by default.

This is described in several on-lite support documents. One such article is at URL:

https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nXSOEA2&pageName=ArticleContent

Shawn

Thanks guys for this very very helpful set of  information.

I will try this immediately and update my .cdsinit and job options !

Best regards

HoWei