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Table:
CLASS file size for several combinations of number of
spectra and number of channels per spectrum. Units are
Megabytes (resp. Gigabytes) for regular font
(resp. bold). Files are of type SINGLE. The missing
combinations were not performed because of the prohibitive
file size.
|
|
 |
|
|
256 |
512 |
1024 |
2048 |
4096 |
8192 |
16384 |
32768 |
65536 |
131072 |
262144 |
524288 |
|
128 |
0.5 |
0.8 |
1.3 |
2.3 |
4.6 |
9.2 |
18.1 |
36.1 |
72.2 |
144.3 |
288.4 |
576.7 |
|
256 |
0.7 |
1.0 |
1.8 |
3.3 |
6.6 |
13.2 |
26.1 |
52.1 |
104.2 |
208.4 |
416.5 |
833.0 |
|
512 |
0.9 |
1.5 |
2.8 |
5.3 |
10.6 |
21.2 |
42.1 |
84.1 |
168.3 |
336.5 |
672.8 |
1.3 |
|
1024 |
1.4 |
2.6 |
4.8 |
9.3 |
18.6 |
37.2 |
74.1 |
148.2 |
296.4 |
592.8 |
1.2 |
2.3 |
|
2048 |
2.4 |
4.6 |
8.8 |
17.3 |
34.6 |
69.2 |
138.2 |
276.3 |
552.7 |
1.1 |
2.2 |
4.3 |
|
4096 |
4.4 |
8.6 |
16.8 |
33.3 |
66.7 |
133.3 |
266.3 |
532.6 |
1.0 |
2.1 |
4.2 |
8.3 |
|
8192 |
8.5 |
16.6 |
32.9 |
65.4 |
130.7 |
261.5 |
522.6 |
1.0 |
2.0 |
4.1 |
8.2 |
16.3 |
|
16384 |
16.5 |
32.6 |
64.9 |
129.5 |
258.9 |
517.7 |
1.0 |
2.0 |
4.0 |
8.1 |
16.2 |
32.3 |
|
32768 |
32.6 |
64.7 |
129.1 |
257.7 |
515.2 |
1.0 |
2.0 |
4.0 |
8.0 |
16.1 |
32.2 |
64.4 |
|
65536 |
64.7 |
128.9 |
257.3 |
514.1 |
1.0 |
2.0 |
4.0 |
8.0 |
16.1 |
32.1 |
64.2 |
- |
|
131072 |
129.1 |
257.3 |
513.8 |
1.0 |
2.0 |
4.0 |
8.0 |
16.0 |
32.1 |
64.1 |
- |
- |
|
262144 |
257.7 |
514.1 |
1.0 |
2.0 |
4.0 |
8.0 |
16.0 |
32.1 |
64.1 |
- |
- |
- |
|
524288 |
514.9 |
1.0 |
2.0 |
4.0 |
8.0 |
16.0 |
32.0 |
64.1 |
- |
- |
- |
- |
|
1048576 |
1.0 |
2.0 |
4.0 |
8.0 |
16.0 |
32.0 |
64.1 |
- |
- |
- |
- |
- |
|
This benchmark measures the WRITE'ing capabilities of CLASS. A new
CLASS file is opened in the desired mode. A spectrum containing
is generated thanks to the command ANALYSE
MODEL, and is written
times in the
file. The USER and SYSTEM times (described below) are measured at
typical stages. This is repeated for several values of
and for all output filetypes. Table
shows the
combinations of
and
which have been
benchmarked.
The tests were realized on an IRAM machine (64 bits, Fedora 6) with
CLASS compiled with the ifort compiler (version 10), writing
on a local hard drive. For the old syntax FILE OUT NEW, CLASS
version of the 22-sep-2008 was used. For the new syntax FILE OUT
SINGLE|MULTIPLE, current version of CLASS was used.
The different figures in this document aim to compare the
performances of CLASS when writing old and new file
types. Nevertheless, the SINGLE and MULTIPLE types provide the same
level of performance. The benchmark for the NEW, SINGLE, and MULTIPLE
types are thus presented only on Fig. 1. Later on, only the NEW and
SINGLE types are compared.
Next: File size
Up: Benchmark
Previous: Benchmark
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Gildas manager
2023-06-01