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fimex:install [2009-01-21 13:56:08] heikok |
fimex:install [2022-05-31 09:29:32] (current) |
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- | ====== | + | ====== |
+ | |||
+ | ===== Pre-built Packages ===== | ||
+ | |||
+ | If you are lucky to run one of the following operating systems, you can install fimex from a package repository, please check the [[fimex: | ||
===== Dependencies ===== | ===== Dependencies ===== | ||
Fimex requires at least the following libraries to be installed for compilation: | Fimex requires at least the following libraries to be installed for compilation: | ||
- | * c99/c++ compiler | + | * c99/c++11 compiler |
* [[http:// | * [[http:// | ||
- | * [[http:// | ||
* [[http:// | * [[http:// | ||
+ | * [[http:// | ||
+ | * [[https:// | ||
+ | * [[https:// | ||
+ | * [[https:// | ||
- | To configure the different file formats it requires: | + | To configure the different file formats |
- | * [[http:// | + | |
* [[http:// | * [[http:// | ||
- | * Felt (libmi) | + | * [[https:// |
- | * [[http://www.ecmwf.int/products/data/software/grib_api.html|grib_api]] (> 1.4) | + | * [[http://log4cpp.sourceforge.net/|Log4cpp]]: advanced logging library |
+ | * [[http://www.openmp.org/|OpenMP-3.0]] enable compiler: Parallelization | ||
+ | * [[http:// | ||
- | ===== Installation | + | ===== Build ===== |
- | The installation follows the usual autoconf rules, see ' | + | See [[https://github.com/metno/fimex/blob/ |
- | extensive information. Since Fimex makes some floating-point calculations | + | |
- | in large loops, it is advisable to switch on SIMD/SSE operations in your | + | |
- | compiler. On a Xeon machine with a x386 machine and gcc, I use the | + | |
- | following flags (those are default for x86-64) (see [[http://heikok.blogspot.com/2008/08/microbenchmark-of-sse-in-c-revisited.html|microbenchmark of sse]] for more information) | + | |
+ | ==== Optimizations with gcc ==== | ||
+ | |||
+ | The following optimizations have been tried with gcc 4.4 and kd-tree interpolation. | ||
+ | |||
+ | * **-O2** general optimizations like loop-unrolling/ | ||
+ | * **-mfpmath=sse -msse2** on i386 computers, use math from sse-unit. The build-in FPU is not IEEE conform and performs very slowly (> factor 2) when calculating sqrt(nan). This is already the default on i386-64. | ||
+ | * // | ||
+ | * // | ||
+ | * //-O3// gives no visible performance gain. This should be tested again with newer compiler-versions. | ||
+ | * // | ||
+ | |||
+ | ==== Parallelization (OpenMP) ==== | ||
+ | |||
+ | Fimex can be build with OpenMP parallelization support with the // | ||
+ | |||
+ | * interpolation: | ||
+ | * interpolation with coord_nearestneighbor (good parallelization in startup) | ||
+ | |||
+ | ===== Test ===== | ||
+ | |||
+ | * Download the file with testdata: {{: | ||
+ | * Put this file into the test-catalogue | ||
+ | * gunzip the file | ||
+ | * run '' | ||
+ | |||
+ | ===== Known Problems ===== | ||
+ | |||
+ | ==== udunits1 and FMRC ==== | ||
+ | |||
+ | udunits1 does not differ between a date and a timespan, e.g. | ||
< | < | ||
- | export milib_CFLAGS=-I/ | + | $ ./udunits |
- | export milib_LIBS=' | + | You have: hours |
- | CFLAGS=' | + | You want: hours since 2010-01-01 00:00:00 |
- | make | + | < |
- | make check | + | <hours since 2010-01-01 00: |
- | make install | + | |
</ | </ | ||
- | In case of compilation against the netcdf4 library | + | Therefore, data with two time-axis, e.g. in [[http:// |
+ | test-failure: | ||
< | < | ||
- | | + | unknown location:0: fatal error in " |
+ | testCoordinateSystemSliceBuilder.cc:69: last checkpoint | ||
+ | |||
+ | *** 1 failure detected in test suite " | ||
+ | FAIL: testCoordinateSystemSliceBuilder | ||
</ | </ | ||
+ | |||
+ | If you don't intend to use FMRC, you can ignore this error, otherwise, you should upgrade to udunits2. | ||
+ | |||
+ | |||
+ | ==== udunits1 and udunits2 ==== | ||
+ | |||
+ | If both udunits1 and udunits2 are available on the machine, fimex might prefer udunits1 unless explicitly disabled. To explicitly disable udunits1, use: | ||
+ | < | ||
+ | ./configure --without-udunits --with-udunits2 ... | ||
+ | </ | ||
+ | |||
+ | ==== MacOS X and gcc ==== | ||
+ | |||
+ | Under MacOS X strings may come in different flavour for gcc, either static or fully dynamic. Libraries compiled with one type of strings don't work well with programs/ | ||
+ | < | ||
+ | | ||
+ | </ | ||
+ | |||
+ | boost:: | ||
+ | * download boost | ||
+ | * add '' | ||
+ | * run < | ||
+ | ./ | ||
+ | ./b2 install | ||
+ | </ | ||
+ | For more information, | ||
+ | |||
+ | |||
+ | ==== AIX ==== | ||
+ | |||
+ | The boost libraries (1.44) are not compatible with the AIX XL/C++ compiler V10 and we had to compile boost and fimex with gcc to get it working under AIX. This might have been improved with newer versions of the AIX compiler, but hasn't been tested: http:// | ||
+ |