Changeset 606 for XIOS/trunk/src/output/netCdfInterface.cpp

Timestamp:

06/03/15 15:06:25 (9 years ago)

Author:

rlacroix

Message:

Support NetCDF4 compression.

Only available for non-parallel output so either if only one server is used or if the multiple file mode is enabled).

File:

• XIOS/trunk/src/output/netCdfInterface.cpp (modified) (1 diff)

XIOS/trunk/src/output/netCdfInterface.cpp

@@ -525 +525 @@
 
 /*!
+This function sets the compression level to the specified variable
+\param [in] ncid Groud id (or file id)
+\param [in] varId Id of the variable
+\param [in] compressionLevel The compression level from 0 to 9 (0 disables the compression, 9 is the higher compression)
+\return Status code
+*/
+int CNetCdfInterface::defVarDeflate(int ncid, int varId, int compressionLevel)
+{
+  int status = nc_def_var_deflate(ncid, varId, false, (compressionLevel > 0), compressionLevel);
+  if (NC_NOERR != status)
+  {
+    StdString errormsg(nc_strerror(status));
+    StdStringStream sstr;
+
+    sstr << "Error in calling function " << "nc_def_var_deflate(ncid, varId, false, (compressionLevel > 0), compressionLevel)" << std::endl;
+    sstr << errormsg << std::endl;
+    sstr << "Unable to set the compression level of the variable with id: " << varId
+         << " and compression level: " << compressionLevel << std::endl;
+    StdString e = sstr.str();
+    throw CNetCdfException(e);
+  }
+
+  return status;
+}
+
+/*!
 Set or unset the fill mode for a NetCDF file specified by its file id.
 \param [in] ncid File id