Hi Joe, > > It may be necessary to add a call to Sleep(0) under Windows > > or to sched_yield() under Linux at regular intervals in all > > routines that might lock up the CPU for a too long time. > > > > Those calls are effected by lir_sched_yield() in the OS independent > > code of Linrad and I found it necessary to place about 45 such > > calls within Linrad. > > Hmmm, I may have trouble doing the equivalent. For example, > MAP65 does some very long FFTs using tthe FFFTW3 library. I > can't very well put calls to relinquish CPU control inside these > tasks. No, but just before and just after;-)
In Linrad such calls are issued inside the computation of the second fft in case the size is above 32768. > On the other hand, there is a "threads" version of > FFTW3, which might be what's needed. Probably, on a single core computer. On a dual core (or more) it should be OK to have one thread locking up one core for long times provided that the other core never has to do an "endless" task simultaneously:-) > Right now such issues are not a top priority, though. Oooh! I do understand that:-) 73 Leif / SM5BSZ ############################################################# This message is sent to you because you are subscribed to the mailing list <linrad@antennspecialisten.se>. To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]> Send administrative queries to <[EMAIL PROTECTED]>
