SixSort is a faster and higher quality in-place sorter than
Quicksort. A complexity analysis suggests that the SixSort/Quicksort
time use ratio is 0.58 on large arrays.
A test on a 16M array yields the ratio 0.59 (against a best in class
Quicksort). On an AMD box.
SixSort can be parallelized easily, like Quicksort. Parallel SixSort
against Quicksort with two threads yields an excellent time ratio of
0.33. On an AMD box.
Tests on multiple Intel boxes give disappointing results. Here what
was observed on MTL:
Does the MTL allow MPI yet ? I would like to try out my SSE based code and compare it to my openMP results, especially with the new 40 core upgrade. I have relativley morecontrol over the core allocation with MPI than openMP and would find it easier to implement the SSE bits.
Is there a way to search only the MTL forum threads with the Intel forum search device? When using the search all forums are allocated in a list. This search list does not include the MTL. When doing a search the results from all forums are returned.
Am I looking at this correctly ?
I'm trying to do some work with java and the version keeps coming up as 1.4.2. Here is the output: java version "1.4.2" gij (GNU libgcj) version 4.1.2 20080704 (Red Hat 4.1.2-46) Is there anyway the latest version of java can be loaded up? It's my understanding that java 7 is geared to handle multicore development and I would like to look into that.
Hello IntelMTLteam / Mike,
exportModelAsMpsFileexportModelAsMpsFile doneexportModelAsLpFile/var/spool/PBS/mom_priv/jobs/12681.acaad01.SC: line 5: 31151 Bus error /home/sels/projects/KUL/RhinoCeros/retime/Debug/retime 0[sels@acano01 Debug]$
This is the way I typically submit batch jobs:
qsub -l select=1:ncpus=40 rl-myjob
Ever since the Memorial Day weekend maintenance, jobs submitted this way have been running about 5 times slower than than they do on the login node. I traced the problem to ncpus values greater than 32. For example, on a small test that uses 64 threads and normally runs in under 30 seconds:
qsub -l select=1:ncpus=32 rl-myjob
# Finishes in about 24 seconds
qsub -l select=1:ncpus=33 rl-myjob
# Takes over 120 seconds
I can not find any information. On Friday, appeared in the console information about maintenance. When the lab will be running?
FYI, I have VNC and XMing working 100%. With the posts on the forum it's dead easy to set up. XMing is slow over long distances (I am in South Africa, even with 4mbps ADSL the latency makes X almost unbearable).
VNC is slightly faster because it only sends screen updates, and has the added advantage of persistent sessions - if the nodes aren't bounced while you are offline, your desktop will still be as you left it when you disconnected VNC. For the "purists", XMing does full XServer rendering on your remote PC, which is quite nice, but has no session persistence.