Displaying 9 results from an estimated 9 matches for "bs4".
Did you mean:
b44
2018 Mar 16
1
Discrepancy: R sum() VS C or Fortran sum
...fact
match the result if we use the Kahan algorithm.
P.
I am glad to see that R sum() is more accurate than the gfortran
compiler sum.
On 16/03/18 11:37 AM, luke-tierney at uiowa.edu wrote:
> Install the gmp package, run your code, and then try this:
>
> bu <- gmp::as.bigq(u)
> bs4 <- bu[1] + bu[2] + bu[3] + bu[4] + bu[5]
> s4 <- as.double(bs4)
> s1 - s4
> ## [1] 0
> s2[[2]] - s4
> ## [1] 7.105427e-15
> s3 - s4
> ## [1] 7.105427e-15
> identical(s1, s4)
> ## [1] TRUE
>
> `bs4` is the exact sum of the binary rationals in your `u` vecto...
2018 Mar 16
0
Discrepancy: R sum() VS C or Fortran sum
Install the gmp package, run your code, and then try this:
bu <- gmp::as.bigq(u)
bs4 <- bu[1] + bu[2] + bu[3] + bu[4] + bu[5]
s4 <- as.double(bs4)
s1 - s4
## [1] 0
s2[[2]] - s4
## [1] 7.105427e-15
s3 - s4
## [1] 7.105427e-15
identical(s1, s4)
## [1] TRUE
`bs4` is the exact sum of the binary rationals in your `u` vector;
`s4` is the closest double precision to this exact...
2018 Mar 16
3
Discrepancy: R sum() VS C or Fortran sum
Hi all,
I found a discrepancy between the sum() in R and either a sum done in C
or Fortran for vector of just 5 elements. The difference is very small,
but this is a very small part of a much larger numerical problem in
which first and second derivatives are computed numerically. This is
part of a numerical method course I am teaching in which I want to
compare speeds of R versus Fortran (We
2012 Jun 19
1
"Too many levels of symbolic links" with glusterfs automounting
I set up a 3.3 gluster volume for another sysadmin and he has added it
to his cluster via automount. It seems to work initially but after some
time (days) he is now regularly seeing this warning:
"Too many levels of symbolic links"
$ df: `/share/gl': Too many levels of symbolic links
when he tries to traverse the mounted filesystems.
I've been using gluster with static mounts
2012 Jul 26
2
kernel parameters for improving gluster writes on millions of small writes (long)
...uster volume is running over IPoIB on QDR IB and looks like this:
Volume Name: gl
Type: Distribute
Volume ID: 21f480f7-fc5a-4fd8-a084-3964634a9332
Status: Started
Number of Bricks: 8
Transport-type: tcp,rdma
Bricks:
Brick1: bs2:/raid1
Brick2: bs2:/raid2
Brick3: bs3:/raid1
Brick4: bs3:/raid2
Brick5: bs4:/raid1
Brick6: bs4:/raid2
Brick7: bs1:/raid1
Brick8: bs1:/raid2
Options Reconfigured:
performance.write-behind-window-size: 1024MB
performance.flush-behind: on
performance.cache-size: 268435456
nfs.disable: on
performance.io-cache: on
performance.quick-read: on
performance.io-thread-count: 64
auth....
2012 Jun 20
2
How Fatal? "Server and Client lk-version numbers are not same, reopening the fds"
...gluster volume was created using the
IPoIB network and numbers:
Volume Name: gl
Type: Distribute
Volume ID: 21f480f7-fc5a-4fd8-a084-3964634a9332
Status: Started
Number of Bricks: 8
Transport-type: tcp,rdma
Bricks:
Brick1: bs2:/raid1
Brick2: bs2:/raid2
Brick3: bs3:/raid1
Brick4: bs3:/raid2
Brick5: bs4:/raid1
Brick6: bs4:/raid2
Brick7: bs1:/raid1
Brick8: bs1:/raid2
Options Reconfigured:
nfs.disable: on
performance.io-cache: on
performance.quick-read: on
performance.io-thread-count: 64
auth.allow: 10.2.*.*,10.1.*.*
using 3.3 servers on SciLi 6.2 and 3.3.0qa42 clients. When trying to
mount the gl...
2012 Aug 23
1
Stale NFS file handle
Hi, I'm a bit curious of error messages of the type "remote operation
failed: Stale NFS file handle". All clients using the file system use
Gluster Native Client, so why should stale nfs file handle be reported?
Regards,
/jon
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
2013 Dec 10
4
Structure needs cleaning on some files
Hi All,
When reading some files we get this error:
md5sum: /path/to/file.xml: Structure needs cleaning
in /var/log/glusterfs/mnt-sharedfs.log we see these errors:
[2013-12-10 08:07:32.256910] W
[client-rpc-fops.c:526:client3_3_stat_cbk] 1-testvolume-client-0: remote
operation failed: No such file or directory
[2013-12-10 08:07:32.257436] W
[client-rpc-fops.c:526:client3_3_stat_cbk]
2008 Aug 09
2
xy plot in version 2.7.1 for Mac (PR#12520)
...8GawTNC09v3wsfChxqqbn4
qwNLdXj5BvF66k+6qvj42J8+quR1oflOyZvs2RJw/qol+TZUi5N3St5kn1zn6edfo+r45HX+eq/k
ZSb7yHXC96+N3jslb7JPLPnyl9uXovH0TsmL7MPR+QwTQvwm+9SSl8/YQe368Bn7i076p+/1DPXU
n/wtV2+Tt0+imcWQ7dP3Pz2++Reswcnf/+XxD+s/Pr7/6+Ofv6+c+MJK+1OVacG1577ZfaIS5T2r
HL9fZ1ZsW/j0U53ahmedKtrvNjQf43zj88HxE0OV4helf8BS4ywgq4ufKkV1z0rte363pbuCns94
n+rUg73o/AOG+iYv4MrBp0o1GM9KDcu/21CfStXOz2KvcLwo/ZCl+QqClDJoZEjRcEXw9Hcs/UWI
f/66yvhO349PX+Wi+frrZ1mn1+uvgq9QWTWMZfy7rzvPr1Nbn3u+8npI7Pn0l/3x6+nPApXsA8a/
W0DN018Ev8XD8/TXGffl9FfBV05/u/v7Trlc9yr4yutvd38JM7qbxr8IfuvueGh9hNXyb/6vNHoO
KDL4GKiK14TmGYgfxPav6KtJzsQ3iVKn/azxQ8j+V...