Hi Lorenzo,
I guess you would have to set the WORKERS environment variable to the number of concurrent processes you want to have, e.g. export WORKERS=4 But again, I do not think that this is recommended! Developers would be able to tell you more... Cheers Stefan ________________________________ Von: Lorenzo Bottaccioli <[email protected]> Gesendet: Freitag, 11. März 2016 12:16 An: Blumentrath, Stefan Cc: GRASS user list Betreff: Re: [GRASS-user] r.mapcalc multiprocess Hi Stefan, I have just updated my grass-gis version to 7.0.3, berfore I was using 7.0.0 version and mapcalc was running in multitheard mode and was much faster. My question is how can i make it run again in multitheading? Regards, Lorenzo 2016-03-10 22:39 GMT+01:00 Blumentrath, Stefan <[email protected]<mailto:[email protected]>>: Hi, As far as I know it is not exactly recommended to compile with pthread, and if I recall the latest discussion correctly, the number of default workers was deliberately set to 1 due to issues with multithreaded r.mapcalc. Don`t know which was the latest discussion on this topic, but it has been discussed / explained in detail on the developer list, e.g.: https://lists.osgeo.org/pipermail/grass-dev/2012-June/058749.html https://lists.osgeo.org/pipermail/grass-dev/2008-November/041047.html Hope that helps a bit. Kind regards, Stefan From: grass-user [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Lorenzo Bottaccioli Sent: 10. mars 2016 17:14 To: GRASS user list <[email protected]<mailto:[email protected]>> Subject: [GRASS-user] r.mapcalc multiprocess Hi every one, I have just compiled grass with phtreds but when I run r.mapcalc it runs in only with one theard. How ca I fix this? Is it possible to check if is correclty compiled with phtreads? Tnx Lorenzo
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