[hdf-compass] 71/295: Fix wrong value for chunk slots

[Ghislain Vaillant]

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ghisvail-guest pushed a commit to branch debian/master
in repository hdf-compass.

commit d7de92e064fd9a5bc1598e7d29f5cfe9147b688c
Author: Andrew Collette <andrew.collette at gmail.com>
Date:   Tue May 5 21:59:44 2015 -0600

    Fix wrong value for chunk slots
---
 hdf5_model/__init__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hdf5_model/__init__.py b/hdf5_model/__init__.py
index 2a11c2c..4b3b1e8 100644
--- a/hdf5_model/__init__.py
+++ b/hdf5_model/__init__.py
@@ -45,7 +45,7 @@ class HDF5Store(compass_model.Store):
 
     file_extensions = {'HDF5 File': ['*.hdf5', '*.h5']}
     
-    CACHE_NCHUNKS = 100         # Cache at most this many chunks per dataset
+    CACHE_NSLOTS = 521          # Cache tuning parameter; see HDF5 docs
     CACHE_NBYTES = int(25e6)    # Cache at most this many bytes per dataset
     
     def __contains__(self, key):
@@ -91,7 +91,7 @@ class HDF5Store(compass_model.Store):
         fapl = h5py.h5p.create(h5py.h5p.FILE_ACCESS)
         # First argument is ignored by HDF5.
         # Last argument adjusts the preemption policy (0.0 = simple LRU)
-        fapl.set_cache(0, self.CACHE_NCHUNKS, self.CACHE_NBYTES, 0.0)
+        fapl.set_cache(0, self.CACHE_NSLOTS, self.CACHE_NBYTES, 0.0)
         fid = h5py.h5f.open(path, h5py.h5f.ACC_RDONLY, fapl=fapl)
         self.f = h5py.File(fid)
 

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