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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 :-) )
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, the
>HDF5 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:
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>==============================================================================
--
------------------------------------------------------------
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)
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