Re: LaunchKernels[] and Java
- To: mathgroup at smc.vnet.net
- Subject: [mg128000] Re: LaunchKernels[] and Java
- From: David Bailey <dave at removedbailey.co.uk>
- Date: Sat, 8 Sep 2012 03:07:48 -0400 (EDT)
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On 07/09/2012 10:02, tredmond59 at gmail.com wrote: > I have a machine with 8 cores and I have been getting amazing results with the parallel computation. LaunchKernels[] gives me 4 kernels and many of my problems actually are probably running something like four times as fast. This is really awesome! > > But I am wondering if I can get Java to connect to all of these kernels. I have some java code that I invoke from the mathematica user interface. This program will often run overnight or even for more than a day. I figured if Java will talk to all these kernels then I could divide the problem and it would run much faster. (Conceptually the problem splits up nicely.) > > Does anyone know how to do this? > > -Timothy > I suspect the 4 kernel limit may be determined by your license. I am pretty sure if you use J/Link in 4 kernels, you will get 4 copies of Java running. I'd communicate to Java from one kernel, but then use threads within the Java to spread the load across the available CPUs. David Bailey http://www.dbaileyconsultancy.co.uk