Hi Long,
On Jun 20, 2013, at 8:20 PM, long zhao <[email protected]> wrote:
> I could create a simple file in memory by
>
> fapl = H5Pcreate(H5P_FILE_ACCESS);
> H5Pset_fapl_core(fapl,1024,0);
> file = H5Fcreate(H5FILE_NAME, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
>
> And I want to use H5Fopen to get this file in memory.
> file = H5Fopen(H5FILE_NAME, H5F_ACC_RDWR, fapl);
>
> But I failed.
> The error is:
> HDF5-DIAG: Error detected in HDF5 (1.8.11) thread 0:
> #000: H5F.c line 1582 in H5Fopen(): unable to open file
> major: File accessibilty
> minor: Unable to open file
> #001: H5F.c line 1271 in H5F_open(): unable to open file: time = Fri Jun 21
> 03:19:11 2013
> , name = 'Driver_test5.h5', tent_flags = 1
> major: File accessibilty
> minor: Unable to open file
> #002: H5FD.c line 987 in H5FD_open(): open failed
> major: Virtual File Layer
> minor: Unable to initialize object
> #003: H5FDcore.c line 441 in H5FD_core_open(): unable to open file
> major: File accessibilty
> minor: Unable to open file
>
> The document said :The H5FD_CORE driver enables an application to work with a
> file in memory, speeding reads and writes as no disk access is made.
>
> How to fix it and What should I do?
Try using the "file image" routines:
H5Pset_file_image
H5Pget_file_image
H5Pset_file_image_callbacks
H5Pget_file_image_callbacks
http://www.hdfgroup.org/HDF5/doc/RM/RM_H5P.html
Quincey_______________________________________________
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