similar to: Vectorizing structure reads, writes, etc on X86-64 AVX

Displaying 20 results from an estimated 1200 matches similar to: "Vectorizing structure reads, writes, etc on X86-64 AVX"

2015 Nov 03
2
Vectorizing structure reads, writes, etc on X86-64 AVX
Thank you for your reply. FWIW, I wrote the .ll by hand after taking the C program, using clang to emit the llvm and seeing the memcpy. The memcpy version that clang generates gets compiled into assembly that uses the large sequence of movs and does not use the vector hardware at all. When I started debugging, I took that clang produced .ll and started to write it different ways trying to get
2015 Nov 03
2
Vectorizing structure reads, writes, etc on X86-64 AVX
----- Original Message ----- > From: "Sanjay Patel via llvm-dev" <llvm-dev at lists.llvm.org> > To: "Jay McCarthy" <jay.mccarthy at gmail.com> > Cc: "llvm-dev" <llvm-dev at lists.llvm.org> > Sent: Tuesday, November 3, 2015 12:30:51 PM > Subject: Re: [llvm-dev] Vectorizing structure reads, writes, etc on X86-64 AVX > > If the
2015 Nov 04
2
Vectorizing structure reads, writes, etc on X86-64 AVX
Hi Jay - I see the slow, small accesses using an older clang [Apple LLVM version 7.0.0 (clang-700.1.76)], but this looks fixed on trunk. I made a change that comes into play if you don't specify a particular CPU: http://llvm.org/viewvc/llvm-project?view=revision&revision=245950 $ ./clang -O1 -mavx copy.c -S -o - ... movslq %edi, %rax movq _spr_dynamic at GOTPCREL(%rip),
2007 Oct 15
2
clipping off words inside a vector of strings
Hi, I have a vector of strings (class character) with 6 elements (length 6). I call it 'names'. "Graham Chapman" "John Cleese" "Terry Gilliam" "Eric Idle" "Terry Jones" "Michael Palin" And I want to turn it into another vector of strings called 'shortnames' with the same length. The new vector should look like:
2011 Jan 16
1
Atheros AR9287 PCI passthrough issue
Hi, i''m trying to use PCI passthrough feature on Xen 4.0 but it fails on my Wireless card. I use Xen 4.0 on a Debian 6.0 (package from repo) and try to passthrough the following PCI device root@omega:~# dpkg -l | grep xen ii libxenstore3.0 4.0.1-1 Xenstore communications library for Xen ii linux-image-2.6.32-5-xen-amd64 2.6.32-30 Linux 2.6.32 for 64-bit PCs, Xen dom0 support ii
2008 Feb 16
0
arris tm502g cablemodem FXS ports and zaptel 1.4.8
Hi there, I have a cablemodem, ARRIS brand, model tm502G. It has two FXS ports. I was wondering if anyone has details about the correct signalling of these FXS ports when connected to original X100p. Tests: fxsks on the zapata.conf and zaptel.conf files. From my cellphone I call the ARRIS, it starts ringing but the zap channel sees no call coming in. fxsls on the zapata.conf and zaptel.conf
2020 Feb 24
3
[RESEND PATCH v2 9/9] ath5k: Constify ioreadX() iomem argument (as in generic implementation)
On Thu, Feb 20, 2020 at 10:48:33AM +0100, Jiri Slaby wrote: > On 19. 02. 20, 18:50, Krzysztof Kozlowski wrote: > > The ioreadX() helpers have inconsistent interface. On some architectures > > void *__iomem address argument is a pointer to const, on some not. > > > > Implementations of ioreadX() do not modify the memory under the address > > so they can be
2009 Mar 23
3
Replacing a few variable values within a DataFrame...
I would like to replace a few varaibles within a data frame. For example, in the dataframe below (contrived) I would like to replace the current housesize value only if the Location is HSV. However, I would like to leave the other values intact. I tried "ifelse", but I don't really need the else condition. test_data2_df<-data.frame(Variables=c("SQR
2020 Feb 19
1
[RESEND PATCH v2 9/9] ath5k: Constify ioreadX() iomem argument (as in generic implementation)
The ioreadX() helpers have inconsistent interface. On some architectures void *__iomem address argument is a pointer to const, on some not. Implementations of ioreadX() do not modify the memory under the address so they can be converted to a "const" version for const-safety and consistency among architectures. Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org> Acked-by:
2010 Aug 25
1
Can't compile ath(4) into kernel
My laptop's kernel config file reads: device wlan # 802.11 support device ath device ath_ar5212 device ath_rate_onoe Config raises no objections and the compilation succeeds, but linking the kernel breaks: ... linking kernel.debug ah.o(.text+0x218): In function `ath_hal_rfprobe':
2009 Apr 11
1
kernel: problems compiling if_ath.c
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I did a cvsup for RELENG_7 earlier today. # uname -a FreeBSD polo.example.org 7.1-STABLE FreeBSD 7.1-STABLE #8: Sat Apr 11 18:50:17 EDT 2009 dan@polo.example.org:/usr/obj/usr/src/sys/PHENOM amd64 No idea what went wrong here. Clues please. cc -c -O2 -frename-registers -pipe -fno-strict-aliasing -std=c99 -g - -Wall -Wredundant-decls
2008 Nov 02
5
Issue with domains
I am running Dovecot 1.0.10 and have it working great on ender.ath.cx (my free DynDNS.com subdomain), but recently I registered lemcoe.com and pointed it to the same IP address as ender.ath.cx. The problem is, only e-mail sent to the @ender.ath.cx works. If it is send it to @lemcoe.com, I don't know where it goes. I get no errors either. How can I get Dovecot to recognize both domains? TIA.
2009 Aug 17
1
Multiple comparison on lme model with 2 fixed factors
Hi! I'm a bit lost while performing multiple comparisons on a lme model of that type: lmeglu=lme(glucose~Ath*tim,random=~1|Vol,na.action=na.omit,data=data) multc = glht(lmeglu, linfct = mcp(Ath = "Tukey", tim = "Tukey")) This works fine for identifying the effect of each factor. However, when I look for their interactions, l only obtain error messages. For example this
2005 Oct 14
2
Wherefore SELinux?
I've tried to wrap my head around SELinux several times, and so far, all I've managed to do is rap my head, and then somewhat painfully. Is there a detailed "SELinux Unleashed" style book anybody can recommend? Anybody read Oreilly's book care to comment? Link:
2013 May 24
1
Libcurl.so.3: wherefore art thou?
I am utterly stumped. I need libcurl.so.3 for CentOS 6.4. I have Googled everything and I have been going all over the Internet looking for a solution. I give up; I need help. The error message I get when I try to run a program is: error while loading shared libraries: libcurl.so.3: cannot open shared object file: No such file or directory I have: Package libcurl-7.19.7-36.el6_4.i686 already
2023 Jan 06
3
[PATCH 1/8] iommu: Add a gfp parameter to iommu_map()
The internal mechanisms support this, but instead of exposting the gfp to the caller it wrappers it into iommu_map() and iommu_map_atomic() Fix this instead of adding more variants for GFP_KERNEL_ACCOUNT. Signed-off-by: Jason Gunthorpe <jgg at nvidia.com> --- arch/arm/mm/dma-mapping.c | 11 +++++++---- .../gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 3 ++-
2023 Jan 06
3
[PATCH 1/8] iommu: Add a gfp parameter to iommu_map()
The internal mechanisms support this, but instead of exposting the gfp to the caller it wrappers it into iommu_map() and iommu_map_atomic() Fix this instead of adding more variants for GFP_KERNEL_ACCOUNT. Signed-off-by: Jason Gunthorpe <jgg at nvidia.com> --- arch/arm/mm/dma-mapping.c | 11 +++++++---- .../gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 3 ++-
2023 Jan 06
3
[PATCH 1/8] iommu: Add a gfp parameter to iommu_map()
The internal mechanisms support this, but instead of exposting the gfp to the caller it wrappers it into iommu_map() and iommu_map_atomic() Fix this instead of adding more variants for GFP_KERNEL_ACCOUNT. Signed-off-by: Jason Gunthorpe <jgg at nvidia.com> --- arch/arm/mm/dma-mapping.c | 11 +++++++---- .../gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 3 ++-
2005 Oct 12
3
Wherefore whitebox?
Well, I'm a recent convert from WBEL. My biggest concern with CentOS is that the community here seems to want to be more than a recompile of RHEL. But WBEL is floundering, what with Katrina and Rita, and there really being only 1 developer behind it, etc. I offer an automated shell script to switch from WBEL4 to CentOS4 (easy, it's hosted on my home DSL line!) It assumes that
2010 Jul 14
1
convert data.frame to matrix -> NA factor problem
Hi list, I tried to convert a data.frame into a matrix using data.matrix. Unfortunately my matrix contains missing values (NA) wherefore all columns including NA's were changed into factors. I thought that many people stumbled across that problem already wherefore there must be a simple solution. But it seems there isn't. I tried lapply, replace and other things in combination but still