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Hi Elena, On Apr 26, 2007, at 12:00 PM, Elena Pourmal wrote:
Ed,Since you are using new feature of HDF5, you cannot use the old APIs. We rewrote your program and it works. It is attached. (That doesn't mean that HDF5 is bugs free :-) )
Hmm, I think that Ed's original program should work also. He's used all the APIs correctly as far as I can see. The older APIs should be able to read the files created with the newer APIs (as long as they are from the newer library).
Quincey
We still have to do a lot of work to make it easy to convert the old applications (like first implementation of NetCDF-4) to use new HDF5 features. So for now you need to make some changes to the NetCDF-4 code.I propose that we work together to speed up NetCDF-4 conversion to the new APIs since our docs are still under development. Will you have time tomorrow to have a quick telecon?Thank you! Elena At 1:57 PM -0600 4/25/07, Ed Hartnett wrote:Jeff Whitaker <jswhit@xxxxxxxxxxx> writes:Ed: The attached C program creates a netcdf4_classic file that is unreadable (ncdump'ing it gives an 'HDF Error'). -Jeff<snip> Jeff, This turns out to be a HDF5 error, I believe.I have reduced it to a HDF5-only program, which I sent to Quincey, theHDF5 programmer. (But I happen to know he's on a well-deserved vacation in Florida, so I don't know when he'll get back to look at this!) If anyone else at HDF5 HQ is interested, here's the HDF5 code that demonstrates the problem. It fails on the H5Gopen call, at the bottom of the code. Thanks! Ed printf("Testing some more simple atts..."); { hid_t fcpl_id, fapl_id, hdfid, grpid; hid_t spaceid, attid, attid1; int one = 1; hsize_t dims[1]; /* Create a HDF5 file. */ if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0) ERR; if (H5Pset_fclose_degree(fapl_id, H5F_CLOSE_STRONG)) ERR; if (H5Pset_latest_format(fapl_id, 1) < 0) ERR; if ((fcpl_id = H5Pcreate(H5P_FILE_CREATE)) < 0) ERR;if (H5Pset_link_creation_order(fcpl_id, (H5P_CRT_ORDER_TRACKED |H5P_CRT_ORDER_INDEXED)) < 0) ERR;if (H5Pset_attr_creation_order(fcpl_id, (H5P_CRT_ORDER_TRACKED |H5P_CRT_ORDER_INDEXED)) < 0) ERR;if ((hdfid = H5Fcreate(FILE_NAME, H5F_ACC_TRUNC, fcpl_id, fapl_id)) < 0) ERR;if (H5Pclose(fapl_id) < 0) ERR; if (H5Pclose(fcpl_id) < 0) ERR; /* Open the root group. */ if ((grpid = H5Gopen(hdfid, "/")) < 0) ERR; /* Write an attribute. */ if ((spaceid = H5Screate(H5S_SCALAR)) < 0) ERR;if ((attid = H5Acreate(grpid, NC3_STRICT_ATT_NAME, H5T_NATIVE_INT,spaceid, H5P_DEFAULT)) < 0) ERR; if (H5Awrite(attid, H5T_NATIVE_INT, &one) < 0) ERR; if (H5Sclose(spaceid) < 0) ERR; H5Fflush(hdfid, H5F_SCOPE_GLOBAL); dims[0] = 1; if ((spaceid = H5Screate_simple(1, dims, NULL)) < 0) ERR; if ((attid1 = H5Acreate(grpid, "a", H5T_NATIVE_INT, spaceid, H5P_DEFAULT)) < 0) ERR; if (H5Awrite(attid1, H5T_NATIVE_INT, &one) < 0) ERR; if (H5Aclose(attid1) < 0) ERR; if ((attid1 = H5Acreate(grpid, "b", H5T_NATIVE_INT, spaceid, H5P_DEFAULT)) < 0) ERR; if (H5Awrite(attid1, H5T_NATIVE_INT, &one) < 0) ERR; if (H5Aclose(attid1) < 0) ERR; if ((attid1 = H5Acreate(grpid, "c", H5T_NATIVE_INT, spaceid, H5P_DEFAULT)) < 0) ERR; if (H5Awrite(attid1, H5T_NATIVE_INT, &one) < 0) ERR; if (H5Aclose(attid1) < 0) ERR; if (H5Sclose(spaceid) < 0) ERR; if (H5Aclose(attid) < 0) ERR; if (H5Gclose(grpid) < 0) ERR; if (H5Fclose(hdfid) < 0) ERR;if ((hdfid = H5Fopen(FILE_NAME, H5F_ACC_RDONLY, H5P_DEFAULT)) < 0) ERR;if ((grpid = H5Gopen(hdfid, "/")) < 0) if (H5Gclose(grpid) < 0) ERR; if (H5Fclose(hdfid) < 0) ERR; } -- Ed Hartnett -- ed@xxxxxxxxxxxxxxxx===================================================================== =========To unsubscribe netcdf-hdf, visit: http://www.unidata.ucar.edu/mailing-list-delete-form.html===================================================================== =========-- ------------------------------------------------------------ Elena Pourmal The HDF Group 1901 So First ST. Suite C-2 Champaign, IL 61820 epourmal@xxxxxxxxxxxx (217)333-0238 (office) (217)333-9049 (fax) ------------------------------------------------------------ <netcdf_bug.c>
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