Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.electronics.design > #451183
| From | Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: LTspice Loafing? |
| Date | 2017-03-10 19:06 +0100 |
| Message-ID | <eig88oFdvpkU1@mid.individual.net> (permalink) |
| References | (3 earlier) <k9b3cc9k8jq4dnsuc7o5eqh3r92dsddm4h@4ax.com> <o9sf6f$6oj$1@dont-email.me> <59fc678f-8758-4c7b-9778-16bb107366a2@googlegroups.com> <eiem58F47slU1@mid.individual.net> <48k5cc5ec7bbg70iu7fmmsu2vehidj0mo6@4ax.com> |
Am 10.03.2017 um 17:20 schrieb John Larkin: > On Fri, 10 Mar 2017 04:51:03 +0100, Gerhard Hoffmann > <ghf@hoffmann-hochfrequenz.de> wrote: >> >> LTspice 4: Linux, virtual Win7 machine VMware Workstation 12: 42 sec >> same machine in a Linux window LTspice4 with wine under Linux: 22 sec >> >> Machine is a Dell Precision "portable Workstation" 3.5 years old. >> "portable" has to be taken with a grain of salt. 240W power supply. > > > On my Dell, that sim runs about 10% slower if I plot the waveform > during the run. I can imagine that PCs with slow graphics could take a > bigger hit. Do VMs add graphics overhead? I suppose they do. There must be a lot of exchanging graphics state when switching tasks and there must be a lot of task switches; when I move the cursor from a win7 window to the Linux table top: that looks harmless, but someone has to decide now which operating system has to react on the next click. And that click could trigger actions is a 3D game or 3D layout in Altium Designer. I also think that the 2nd 2560*144 pixel monitor attached to my laptop slows things down, somewhat. Waveform was ON in my test. > We once rented a compute farm from Amazon to run a slow sim. It wasn't > any faster than our 4-core Dells. Spice is well-known for being hard to parallelize. It has been tried over and over again. It is not even really floating-point limited. There has been H-spice on the Cray trying to vectorize it. Do you remember all those Weitek/NS32032 coprocessor boards that were sold as Spice accelerators? No one ever made a breakthrough. Gerhard
Back to sci.electronics.design | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
LTspice Loafing? rickman <gnuarm@gmail.com> - 2017-03-09 03:29 -0500
Re: LTspice Loafing? Johann Klammer <klammerj@NOSPAM.a1.net> - 2017-03-09 11:37 +0100
Re: LTspice Loafing? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-09 09:53 -0500
Re: LTspice Loafing? makolber@yahoo.com - 2017-03-09 07:03 -0800
Re: LTspice Loafing? Don Kuenz <g@crcomp.net> - 2017-03-11 01:01 +0000
Re: LTspice Loafing? tabbypurr@gmail.com - 2017-04-17 08:59 -0700
Re: LTspice Loafing? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-09 09:34 -0800
Re: LTspice Loafing? rickman <gnuarm@gmail.com> - 2017-03-09 18:11 -0500
Re: LTspice Loafing? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-09 11:33 -0800
Re: LTspice Loafing? John S <Sophi.2@invalid.org> - 2017-03-09 14:53 -0600
Re: LTspice Loafing? Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-03-09 13:42 -0800
Re: LTspice Loafing? Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-03-09 16:49 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-10 10:25 +0000
Re: LTspice Loafing? Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-03-10 04:51 +0100
Re: LTspice Loafing? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-10 08:20 -0800
Re: LTspice Loafing? Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-03-10 19:06 +0100
Re: LTspice Loafing? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-10 10:42 -0800
Re: LTspice Loafing? John S <Sophi.2@invalid.org> - 2017-03-10 20:29 -0600
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-11 08:55 +0000
Re: LTspice Loafing? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 08:46 -0800
Re: LTspice Loafing? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 08:45 -0800
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-11 17:11 +0000
Re: LTspice Loafing? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 09:39 -0800
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-11 18:16 +0000
Re: LTspice Loafing? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 11:04 -0800
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-10 22:56 +0000
Re: LTspice Loafing? Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-03-13 06:54 +0100
Re: LTspice Loafing? rickman <gnuarm@gmail.com> - 2017-03-09 17:39 -0500
Re: LTspice Loafing? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-09 18:01 -0500
Re: LTspice Loafing? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-09 15:49 -0800
Re: LTspice Loafing? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-09 19:07 -0500
Re: LTspice Loafing? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-09 16:13 -0800
Re: LTspice Loafing? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-09 20:25 -0500
Re: LTspice Loafing? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-09 19:11 -0800
Re: LTspice Loafing? Bill Martin <wwm@wwmartin.net> - 2017-03-10 10:24 -0800
Re: LTspice Loafing? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-12 23:32 -0400
Re: LTspice Loafing? mixed nuts <melopsitticus@undulatus.budgie> - 2017-03-10 00:03 -0500
Re: LTspice Loafing? mhx@iae.nl - 2017-04-17 01:02 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-17 16:14 +0100
Re: LTspice Loafing? "Kevin Aylward" <kevinRemoveandReplaceATkevinaylward.co.uk> - 2017-04-17 17:38 +0100
Re: LTspice Loafing? Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-04-17 09:54 -0700
Re: LTspice Loafing? mhx@iae.nl - 2017-04-17 11:55 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-17 21:20 +0100
Re: LTspice Loafing? mhx@iae.nl - 2017-04-17 14:22 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-18 19:16 +0100
Re: LTspice Loafing? mhx@iae.nl - 2017-04-17 12:09 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-17 21:19 +0100
Re: LTspice Loafing? mhx@iae.nl - 2017-04-17 14:14 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-18 19:14 +0100
Re: LTspice Loafing? mhx@iae.nl - 2017-04-18 14:04 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-19 08:45 +0100
Re: LTspice Loafing? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-04-19 00:35 -0500
Re: LTspice Loafing? mhx@iae.nl - 2017-04-19 05:28 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-19 14:00 +0100
Re: LTspice Loafing? mhx@iae.nl - 2017-04-19 10:35 -0700
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-19 20:29 +0100
Re: LTspice Loafing? John Devereux <john@devereux.me.uk> - 2017-03-10 07:19 +0000
Re: LTspice Loafing? rickman <gnuarm@gmail.com> - 2017-03-09 13:23 -0500
Re: LTspice Loafing? bill.sloman@ieee.org - 2017-03-09 03:15 -0800
Re: LTspice Loafing? "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-09 20:12 +0000
Re: LTspice Loafing? rickman <gnuarm@gmail.com> - 2017-03-09 17:47 -0500
Re: LTspice Loafing? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-09 18:09 -0500
Re: LTspice Loafing? Johann Klammer <klammerj@NOSPAM.a1.net> - 2017-03-10 01:00 +0100
Re: LTspice Loafing? rickman <gnuarm@gmail.com> - 2017-03-09 19:52 -0500
Re: LTspice Loafing? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-09 18:23 -0500
csiph-web