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Groups > sci.electronics.design > #450944 > unrolled thread
| Started by | rickman <gnuarm@gmail.com> |
|---|---|
| First post | 2017-03-09 03:29 -0500 |
| Last post | 2017-03-09 18:23 -0500 |
| Articles | 5 on this page of 65 — 21 participants |
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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
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-03-09 17:47 -0500 |
| Message-ID | <o9slrs$h2h$1@dont-email.me> |
| In reply to | #451027 |
On 3/9/2017 3:12 PM, Kevin Aylward wrote: > wrote in message > news:114894f7-9781-46c3-b695-e9d0fd488d3d@googlegroups.com... > >> On Thursday, March 9, 2017 at 7:29:17 PM UTC+11, rickman wrote: >>> I was running some simulations on LTspice and it is not even using 5% of >>> my CPU. Nothing else is topping it and the entire computer is pretty >>> much at idle. What could be limiting the speed? >> >>> One of the main reasons I bought a laptop with an i7 processor was to >>> speed simulations. Is this wasted on LTspice or am I doing something >>> wrong? > >> It might be worth buying more RAM or a solid state hard disk. > >> LTSpice can get very slow when the waveform files are are being >> swapped out of RAM onto hard disk. > > Yes. True for any spice. Once it starts memory swapping, its all over. > Always get as much memory as you can if running spice. > > I've had 16 GB on my computers for many years now. 16 GB is pretty much standard for non-entry level now. I'm looking for a new machine to replace this piece of crap and it will have 32 GB. There seems to be a new thing now, gaming laptops. It's hard to find a high end laptop unless it is a "gaming" machine with fancy case, colors and even RGB lighted keyboards. What crap! I just want a machine I can type on without activating the touchpad and a touchpad with *real* buttons so I can use it with my thumb on the buttons. I have to use a wireless mouse... which should have the dongle built into the damn laptop!!! Oh, and while I'm ranting, the function keys should be FUNCTION KEYS!!! I did finally find a setting to switch the default behavior of my function keys to be function keys and the laptop specific functions are now activated by the laptop specific feature enable key... but I still can't use F4 in any apps. Seems someone, somewhere it overriding F4 being a general purpose key and feels I need yet another way to close a program. Instead of cycling the addressing mode in spreadsheets, it asks if I want to save my work before closing. -- Rick C
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| From | bitrex <bitrex@de.lete.earthlink.net> |
|---|---|
| Date | 2017-03-09 18:09 -0500 |
| Message-ID | <OglwA.29241$mb5.15829@fx19.iad> |
| In reply to | #451027 |
On 03/09/2017 03:12 PM, Kevin Aylward wrote: > wrote in message > news:114894f7-9781-46c3-b695-e9d0fd488d3d@googlegroups.com... > >> On Thursday, March 9, 2017 at 7:29:17 PM UTC+11, rickman wrote: >>> I was running some simulations on LTspice and it is not even using 5% of >>> my CPU. Nothing else is topping it and the entire computer is pretty >>> much at idle. What could be limiting the speed? >> >>> One of the main reasons I bought a laptop with an i7 processor was to >>> speed simulations. Is this wasted on LTspice or am I doing something >>> wrong? > >> It might be worth buying more RAM or a solid state hard disk. > >> LTSpice can get very slow when the waveform files are are being >> swapped out of RAM onto hard disk. > > Yes. True for any spice. Once it starts memory swapping, its all over. > Always get as much memory as you can if running spice. > > I've had 16 GB on my computers for many years now. > > -- Kevin Aylward > http://www.anasoft.co.uk - SuperSpice > http://www.kevinaylward.co.uk/ee/index.html Having a CPU with a nice fat L1/L2 cache probably helps a lot too - my guess is if that whatever set of matrix data structures LTSpice uses internally to represent a single stepping iteration's results can't fit inside the CPU cache you're kind of fucked, have to head out to RAM/disk every time.
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| From | Johann Klammer <klammerj@NOSPAM.a1.net> |
|---|---|
| Date | 2017-03-10 01:00 +0100 |
| Message-ID | <o9spe1$1m7k$1@gioia.aioe.org> |
| In reply to | #451068 |
On 03/10/2017 12:09 AM, bitrex wrote: > > Having a CPU with a nice fat L1/L2 cache probably helps a lot too - > my guess is if that whatever set of matrix data structures LTSpice > uses internally to represent a single stepping iteration's results > can't fit inside the CPU cache you're kind of fucked, have to head > out to RAM/disk every time. I doubt it. The slow warthogs are typically buried in the OS/GUI code somewhere. Can you turn off the marching waveforms? maybe it's a GUI thing?
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-03-09 19:52 -0500 |
| Message-ID | <o9st61$9b2$1@dont-email.me> |
| In reply to | #451073 |
On 3/9/2017 7:00 PM, Johann Klammer wrote: > On 03/10/2017 12:09 AM, bitrex wrote: >> >> Having a CPU with a nice fat L1/L2 cache probably helps a lot too - >> my guess is if that whatever set of matrix data structures LTSpice >> uses internally to represent a single stepping iteration's results >> can't fit inside the CPU cache you're kind of fucked, have to head >> out to RAM/disk every time. > > I doubt it. The slow warthogs are typically buried in the OS/GUI code somewhere. > Can you turn off the marching waveforms? maybe it's a GUI thing? It runs faster if I hide the waveforms. I can minimize the window in fact, and it pops up when done. -- Rick C
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| From | bitrex <bitrex@de.lete.earthlink.net> |
|---|---|
| Date | 2017-03-09 18:23 -0500 |
| Message-ID | <kulwA.73528$XG2.48858@fx08.iad> |
| In reply to | #450944 |
On 03/09/2017 03:29 AM, rickman wrote: > I was running some simulations on LTspice and it is not even using 5% of > my CPU. Nothing else is topping it and the entire computer is pretty > much at idle. What could be limiting the speed? > > One of the main reasons I bought a laptop with an i7 processor was to > speed simulations. Is this wasted on LTspice or am I doing something > wrong? > Are you using Windows Task Manager/Resource mointor on Win8/8.1/10 to look at the CPU usage? Because it's often full of shit. ;-) Try a program like RealTemp...
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