49%
07.03.2019
; you should collapse two or more loops.
Table 4: Collapsing Loops
Fortran
C
!$acc parallel loop collapse(2)
do i=1,n
...
do j=1,m
...
enddo
49%
02.02.2021
from 1.00 with one processor to 1.67 with two processors. Although not quite a doubling in performance (a
would have to be 2), about one-third of the possible performance was lost because of the serial
49%
21.12.2011
module load openspeedshop-2.0.1
module load mvapich-1.1
(or other MPI implementation). If you run your application like this normally,
mpirun –np 256 smg2000 –n 65 65 65
or this,
srun -ppbatch -N 32
49%
26.02.2014
:
import re # Needed for regex
except ImportError:
print "Cannot import re module - this is needed for this application.";
print "Exiting..."
sys.exit();
def bytes2human(n
49%
13.10.2020
You ha
ve parallelized your serial application
,
but as you use more cores you are
n
o
t seeing any improvement
in performance
. What gives?
... .00 with one processor to 1.67 with two processors. Although not quite a doubling in performance (a
would have to be 2), about one-third of the possible performance was lost because of the serial portion ...
You
ha
ve parallelized your serial application
,
but as you use more cores you are
n
o
t seeing any improvement
in performance
. What gives?
49%
05.08.2024
/bin/ksh'
user_gecos: 'AIX guest user'
user_pgrp: 'staff'
user_groups: 'staff'
user_fsize: '-1'
user_passwd: "{ssha256}06$FkFHd0q1hxVonC2a$sa1WA0G3mPNWtz2GAhUkfcQ7BkD/mNngBu0Tn2.N.cl"
collections
49%
05.02.2019
if z(i) depends on a previous value, as in the following:
do i = 2,n
z(i) = z(i-1)*2
enddo
As written, you can't generally parallelize the loop because of data dependency [4]. This dependency
49%
20.04.2022
quick brown fox
then add some extended attributes to this file:
$ setfattr -n user.comment -v "This is a comment" test.txt
This command sets the extended file attribute to the name user.comment
. The -v
option indicates
49%
25.03.2021
.io/hostname: "node2"
dataRaidGroups:
- blockDevices:
- blockDeviceName: "blockdevice-3f4e3fea1ee6b86ca85d2cde0f132007"
- blockDeviceName: "blockdevice-db84a74a39c0a1902fced6663652118e
49%
20.03.2014
(hercules) 03.12.2013 _x86_64_ (2 CPU)
09:46:03 runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked
09:46:13 1 468 0.02 0.06 0.14 0
9
