Hi Joe,

I don't know why I didn't think about this before, but, I ran some tests
using my Laptop, Dual Core Centrino 2.0Ghz w/4.GB ram i386 Ubuntu install.

I opened System monitor, and watched the resource usage (HD, Swap, CPU,
etc). The base memory starts out at about 450MB used. It peaks at about
==> 1.9GB of RAM <=== and hits 1.2 to 1.4 GB several times during the
Cmake build portion but never comes close to using Swap. Both cores peg
out at 100% though.

This is a long shot, but if your getting into Swap during any portion of
the build, that will significantly slow things down. 1GB, in a parallel
build, is probably not enough but I'd have to watch the the I/O monitors
to be certain.

A bigger longshot is heat. Maxing out the Cores will cause the CPU core
temps to rise rapidly, especially with Xeon's, there famous for that. If
you've never re-thermal pasted the CPU heatsinks, and / or the cooling
fans are full of dust, the cores can throttle back to safe limits, often
times below 1Ghz levels.

Just a thought.

73's
Greg, KI7MT

On 9/26/2014 21:50, Joe Taylor wrote:
> Bill --
> 
>> AFAIK the JTSDK-QT uses 'cmake --build . --target<target>  --
>> -kj<something>' which passes everything after the '--' to the underlying
>> make tool, which is 'make' in Linux. I don't know what<something>  is
>> but I thought it was either a sensible value for the hardware or just '-kj'.
>>
>> when you say you are running 'make' which Makefile are you building with?
> 
> I build wsjtx on this Linux box with no problems, using the CMake calls 
> in Greg's jtsdk.  Hamlib3 must be built first, separately.  That's OK too.
> 
> My message to Greg was in response to his message (quoted below mine) 
> about a single stand-alone script that would build youe hamlib3 and 
> wsjtx.  With that script, this machine thrashes and does not succeed.
> 
> It's not a problem; just information for Greg.
> 
>       -- Joe
> 
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-- 
73's
Greg, KI7MT

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