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Fix --disable-diskless configure help. Add mmap detail to RELEASE_NOTES.

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This commit is contained in:
Russ Rew 2012-06-18 16:55:00 +00:00
parent 5a2e018d07
commit 59e5dfe830
2 changed files with 30 additions and 29 deletions
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57
RELEASE_NOTES
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@ -8,40 +8,44 @@ VERSION COMMENTS
------- --------
4.2.1-rc1 Released 2012-06-18
Ported the source distribution to successfully build
32- and 64-bit DLLs from source with DAP remote access
enabled on Windows using the MinGW/MSYS
environment. The resulting DLLs may be used with
Visual Studio.
Ported static and shared libraries (DLL's) for both
32- and 64-bit Windows, including support for DAP
remote access, with netCDF-3 and netCDF-4/HDF5 support
enabled. The environment for this build is
MSYS/MinGW/MinGW64, but the resulting DLLs may be used
with Visual Studio.
[NCF-112][NCF-54][NCF-57][NCF-65]
Implemented diskless files for all netCDF formats. For
netcdf classic files, diskless files also support
in-memory caching of disk files. For nc_create(),
diskless operation performs all operations in memory
and then optionally persists the results to a file on
close. For nc_open(), diskless operation caches the
file in-memory, performs all operations on the memory
resident version and then writes all changes back to
the original file on close.
nc_create(), diskless operation performs all
operations in memory and then optionally persists the
results to a file on close. For nc_open(), but only
for netcdf classic files, diskless operation caches
the file in-memory, performs all operations on the
memory resident version and then writes all changes
back to the original file on close.
[NCF-110][NCF-109][NCF-5]
Added MMAP support. If diskless file support is
enabled, then it is possible to enable implementation
of diskless files using the operating system's MMAP
facility (if available). The enabling flag is
"--enable-mmap". This is most useful when using
nc_open() and when only parts of files, a single
variable say, need to be read.
Added configure flag for --disable-diskless.
Added nccopy command-line options to exploit diskless
files, resulting in large speedups for some
operations, for example converting unlimited dimension
to fixed size or rechunking files for faster access.
Added MMAP support.
Added configure flag for --disable-diskless.
Upgraded doxygen and man-page documentation for ncdump
and nccopy utilities, including new -w option for
diskless nccopy, with an example.
[NCF-26]
diskless nccopy, with an example.
Fixed some netCDF-4 bugs with handling strings in
non-netCDF-4 HDF5 files.
non-netCDF-4 HDF5 files.
[NCF-150]
Fixed bug using nccopy to compress with shuffling that
@ -54,7 +58,7 @@ VERSION COMMENTS
bytes per record.
[NCF-164]
Fix bug in which passing a NULL path causes netcdf to fail.
Fix bug in which passing a NULL path to nc_open causes failure.
[NCF-173]
Fixed ncgen bugs in parsing and handling opaque data.
@ -101,12 +105,9 @@ VERSION COMMENTS
preserve line breaks in code and scripts.
[NCF-174]
Fixed some problems uncovered by building with
MinGW/MSYS, including temp file creation problems.
Cleaned up up a bunch of lint issues (unused
variables, etc) and some similar problems reported by
clang static analysis.
Cleaned up a bunch of lint issues (unused variables,
etc.) and some similar problems reported by clang
static analysis.
Updated and fixed pkg-config source file netcdf.pc.in
to work with separated netCDF language-specific

2
configure.ac
View File

@ -587,7 +587,7 @@ AC_CHECK_FUNCS([strlcat strerror snprintf strchr strrchr strcat strcpy \
AC_MSG_CHECKING([whether in-memory files are enabled])
AC_ARG_ENABLE([diskless],
[AS_HELP_STRING([--disable-diskless],
[use in-memory (NC_DISKLESS) files])])
[disable support for in-memory (NC_DISKLESS) files])])
test "x$enable_diskless" = xno || enable_diskless=yes
AC_MSG_RESULT($enable_diskless)