6%
20.04.2022
. If you like, extended attributes add metadata to a file or directory, going beyond the definition of the inode.
Many Linux filesystems can use extended attributes:
ext2
ext3
ext4
JFS
6%
23.03.2022
of the inodes when the filesystem is created, resulting in a fixed number of inodes. For example, ext3 and ext4 filesystems do this. The result is that the filesystem has a fixed number of inodes, which
6%
24.02.2022
machines; (2) the Metadata Service (MDS), which contains Metadata Targets (MDTs); (3) Object Storage Services (OSS), which store file data on one or more Object Storage Targets (OSTs); and (4) the clients
6%
24.02.2022
, an “accepted” payload has been created for measuring IOPS. This size is 4KB.
The kilobyte is defined as 1,000 bytes and is grounded in base 10 (10^3). Over time, kilobyte has been incorrectly used to mean
7%
25.01.2022
of Projects
$ ls -s
total 4548
4 BCACHE 4 INTERNET002 4 OCFS2
4 BEFORE 4 IOSTAT 4 PEARC21
4 BTRFS
6%
09.12.2021
utilities mentioned in this section all use the XZ file format. The compression utility xz
is, itself, threaded. The -T #
flag specifies the number of threads (e.g., -T 4
uses four threads). Note the space
6%
10.11.2021
verbose, although not overwhelming, output about the compression.
lz4
Some very good compression algorithms can achieve very high levels of compression, but they take an inordinate amount of time
6%
13.10.2021
.
Scenario 4
The fourth example has the following environment values:
setenv OMP_PLACES "{0},{1},{2},{3}"
The OpenMP threads are placed in the following manner:
Thread 0 goes to core 0, socket 0
6%
14.09.2021
cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignss
e 3dnowprefetch osvw ibs skinit wdt tce
6%
18.08.2021
).
Figure 3: Job summary tables from darshan-job-summary.pl output PDF.
Another group of useful tables are shown in Figure 4. The top table presents the cumulative time spent in reads and writes