search for: optimizatons

Dear all, I am trying to find a solution satisfying the below equations in R. Set up the problem 9 X1+ X2 + X3 = 2 X1+ X2 + X3 = 1 which is subjected to 0 < X1 < X2 < X3 < 2. I have downloaded the packages \'linprog\' and \'lpSolve\' but can not see how to solve the question. Thank you for your help. With

The Polyhedron 2005 benchmark results for dragonegg svn at r141492 using FSF gcc 4.6.2svn measured on x86_64-apple-darwin11 are listed below. The benchmarks used the optimizaton flags... -msse4 -ffast-math -funroll-loops -O3 in all cases. The use of -fplugin-arg-dragonegg-enable-gcc-optzns to allow for autovectorization from the FSF gcc front-end only produces a single run-time regression,

...{ MPM.add(createLoopInterchangePass()); // Interchange loops MPM.add(createCFGSimplificationPass()); } if (!DisableUnrollLoops) MPM.add(createSimpleLoopUnrollPass()); // Unroll small loops addExtensionsToPM(EP_LoopOptimizerEnd, MPM); // <GVN is now immediately after loop optimizatons if (OptLevel > 1) { MPM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds MPM.add(NewGVN ? createNewGVNPass() : createGVNPass(DisableGVNLoadPRE)); // Remove redundancies } This causes a problem, because GVN appears to be the only pass that can me...

Hi Jack, > The Polyhedron 2005 benchmark results for dragonegg svn at r141492 > using FSF gcc 4.6.2svn measured on x86_64-apple-darwin11 are listed below. > The benchmarks used the optimizaton flags... > > -msse4 -ffast-math -funroll-loops -O3 > > in all cases. The use of -fplugin-arg-dragonegg-enable-gcc-optzns to allow > for autovectorization from the FSF gcc

Hi everyone, I'm planning on releasing Speex 1.2beta2 in the next few days. I'd appreciate if everyone could try and test the current svn to make sure no bug crept in for your favourite plarform/application. Cheers, Jean-Marc

Hi: This series implement basic in order feature support for vhost_net. This feature requires both driver and device to use descriptors in order which can simplify the implementation and optimizaton for both side. The series also implement a simple optimization that avoid read available ring. Test shows 10% performance improvement. More optimizations could be done on top. Jason Wang (3):

Hi Chris, >> PS: With -fplugin-arg-dragonegg-enable-gcc-optzns the LLVM optimizers are run at >> the following levels: >> >> Command line option LLVM optimizers run at >> ------------------- ---------------------- >> -O1 tiny amount of optimization >> -O2 or -O3 -O1 >> -O4 or -O5

On Oct 8, 2011, at 12:05 PM, Duncan Sands wrote: > PS: With -fplugin-arg-dragonegg-enable-gcc-optzns the LLVM optimizers are run at > the following levels: > > Command line option LLVM optimizers run at > ------------------- ---------------------- > -O1 tiny amount of optimization > -O2 or -O3 -O1 > -O4 or -O5

One of my customers handed me a copy of this paper and asked why are we using xen if it is so slow... http://morse.colorado.edu/~tlen5710/12s/VMware.pdf which is a fairly damning report of performance under Xen in comparison to VMWare, citing worse than 50% overhead of Xen in comparison to physical. Has anyone seen this paper before? James