I know nothing about it, but there is discussion on this IOgroup, https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1 https://p.qorvo.com/qspice Dear Group! The simulator I've been working on for the last three years, mentioned here under its code name of S·P·Q·R, will beta imminently as QSPICE. QSPICE(S·P·Q·R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at https://p.qorvo.com/qspice Mike Engelhardt Author of QSPICE
Qspice Beta Testers
Started by ●May 19, 2023
Reply by ●May 19, 20232023-05-19
On Fri, 19 May 2023 09:28:28 -0700 (PDT), Lamont Cranston <amdx62@gmail.com> wrote:> I know nothing about it, but there is discussion on this IOgroup, >https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1 > >https://p.qorvo.com/qspice > >Dear Group! > >The simulator I've been working on for the last three years, mentioned here under its code name of S�P�Q�R, will beta imminently as QSPICE. > >QSPICE(S�P�Q�R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. > >But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. > >If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at https://p.qorvo.com/qspice > >Mike Engelhardt >Author of QSPICEI signed up ! Qorvo was by the other day showing us their United SiC FETs and was surprised I knew about Qspice and the affiliation. I am sure it is going to be a very cool simulator. Can't wait to try it. boB
Reply by ●May 19, 20232023-05-19
On Fri, 19 May 2023 09:28:28 -0700 (PDT), Lamont Cranston <amdx62@gmail.com> wrote:> I know nothing about it, but there is discussion on this IOgroup, ><https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1> > ><https://p.qorvo.com/qspice> > >Dear Group! > >The simulator I've been working on for the last three years, mentioned here under its code name of S�P�Q�R, will beta imminently as QSPICE. > >QSPICE(S�P�Q�R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. > >But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. > >If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at <https://p.qorvo.com/qspice> > >Mike Engelhardt >Author of QSPICEThis could be very interesting: The Grandmaster started with a clean sheet, unhindered by the vast existing spaghetti codebase, or IP conflicts and tangles. I bet that QSPICE's code memory footprint is far smaller than LTspice. I signed up as a beta tester as well. Joe Gwinn - who started with Spice 3f.5, and read Nagle's PhD Thesis at least two decades ago.
Reply by ●May 20, 20232023-05-20
On 5/19/2023 11:28 AM, Lamont Cranston wrote:> I know nothing about it, but there is discussion on this IOgroup, > https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1 > > https://p.qorvo.com/qspice > > Dear Group! > > The simulator I've been working on for the last three years, mentioned here under its code name of S·P·Q·R, will beta imminently as QSPICE. > > QSPICE(S·P·Q·R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. > > But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. > > If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at https://p.qorvo.com/qspice > > Mike Engelhardt > Author of QSPICEI've never been a beta tester. LTSpice IV is what I live by. What are the obligations of the tester?
Reply by ●May 20, 20232023-05-20
On Sunday, May 21, 2023 at 12:25:33 AM UTC+10, John S wrote:> On 5/19/2023 11:28 AM, Lamont Cranston wrote: > > I know nothing about it, but there is discussion on this IOgroup, > > https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1 > > > > https://p.qorvo.com/qspice > > > > Dear Group! > > > > The simulator I've been working on for the last three years, mentioned here under its code name of S·P·Q·R, will beta imminently as QSPICE. > > > > QSPICE(S·P·Q·R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely re-architected. > > > > But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. > > > > If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at https://p.qorvo.com/qspice > > I've never been a beta tester. LTSpice IV is what I live by. What are the obligations of the tester?Tell them about anything that doesn't work, in enough detail that they can reproduce the fault. Much the same as being a Microsoft user, in practice. The assumption is that there will be more faults than in software you've paid for. -- Bill Sloman, Sydney
Reply by ●May 20, 20232023-05-20
On Friday, May 19, 2023 at 12:28:33 PM UTC-4, Lamont Cranston wrote:> I know nothing about it, but there is discussion on this IOgroup, > https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1 > > https://p.qorvo.com/qspice > > Dear Group! > > The simulator I've been working on for the last three years, mentioned here under its code name of S·P·Q·R, will beta imminently as QSPICE. > > QSPICE(S·P·Q·R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. > > But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. > > If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at https://p.qorvo.com/qspice > > Mike Engelhardt > Author of QSPICEI wonder if it will have a modern UI, rather than the DOS inspired, logically inverted, bit of renaissance coding that LTspice is? I'm thinking not, since it's being written by the same guy, but I'm willing to give it a chance. -- Rick C. - Get 1,000 miles of free Supercharging - Tesla referral code - https://ts.la/richard11209
Reply by ●May 20, 20232023-05-20
On Fri, 19 May 2023 15:56:01 -0400, Joe Gwinn <joegwinn@comcast.net> wrote:>On Fri, 19 May 2023 09:28:28 -0700 (PDT), Lamont Cranston ><amdx62@gmail.com> wrote: > >> I know nothing about it, but there is discussion on this IOgroup, >><https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1> >> >><https://p.qorvo.com/qspice> >> >>Dear Group! >> >>The simulator I've been working on for the last three years, mentioned here under its code name of S�P�Q�R, will beta imminently as QSPICE. >> >>QSPICE(S�P�Q�R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. >> >>But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. >> >>If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at <https://p.qorvo.com/qspice> >> >>Mike Engelhardt >>Author of QSPICE > >This could be very interesting: The Grandmaster started with a clean >sheet, unhindered by the vast existing spaghetti codebase, or IP >conflicts and tangles. > >I bet that QSPICE's code memory footprint is far smaller than LTspice. > >I signed up as a beta tester as well. > >Joe Gwinn - who started with Spice 3f.5, and read Nagle's PhD Thesis >at least two decades ago.Mike wrote LT spice from scratch. It's a true compiler and doesn't use the Berkeley code base. Code footprint doesn't matter any more, with common apps taking hundreds of megabytes. The runtime RAM use of LT Spice is initially 4.5 megabytes, and under 12M running and plotting the 6BK4 sim. Firefox is over 1G. Next, I want Spice models for their RF parts.
Reply by ●May 20, 20232023-05-20
On Sat, 20 May 2023 09:23:23 -0500, John S <Sophi.2@invalid.org> wrote:>On 5/19/2023 11:28 AM, Lamont Cranston wrote: >> I know nothing about it, but there is discussion on this IOgroup, >> https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1 >> >> https://p.qorvo.com/qspice >> >> Dear Group! >> >> The simulator I've been working on for the last three years, mentioned here under its code name of S�P�Q�R, will beta imminently as QSPICE. >> >> QSPICE(S�P�Q�R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. >> >> But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. >> >> If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at https://p.qorvo.com/qspice >> >> Mike Engelhardt >> Author of QSPICE > > >I've never been a beta tester. LTSpice IV is what I live by. What are >the obligations of the tester?Upgrade to XVII! It's worth the small hassle.
Reply by ●May 20, 20232023-05-20
On Sat, 20 May 2023 13:03:43 -0700, John Larkin <jlarkin@highlandSNIPMEtechnology.com> wrote:>On Fri, 19 May 2023 15:56:01 -0400, Joe Gwinn <joegwinn@comcast.net> >wrote: > >>On Fri, 19 May 2023 09:28:28 -0700 (PDT), Lamont Cranston >><amdx62@gmail.com> wrote: >> >>> I know nothing about it, but there is discussion on this IOgroup, >>><https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1> >>> >>><https://p.qorvo.com/qspice> >>> >>>Dear Group! >>> >>>The simulator I've been working on for the last three years, mentioned here under its code name of S�P�Q�R, will beta imminently as QSPICE. >>> >>>QSPICE(S�P�Q�R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. >>> >>>But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. >>> >>>If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at <https://p.qorvo.com/qspice> >>> >>>Mike Engelhardt >>>Author of QSPICE >> >>This could be very interesting: The Grandmaster started with a clean >>sheet, unhindered by the vast existing spaghetti codebase, or IP >>conflicts and tangles. >> >>I bet that QSPICE's code memory footprint is far smaller than LTspice. >> >>I signed up as a beta tester as well. >> >>Joe Gwinn - who started with Spice 3f.5, and read Nagle's PhD Thesis >>at least two decades ago. > >Mike wrote LT spice from scratch. It's a true compiler and doesn't use >the Berkeley code base.Now that you mention it, I think I knew that once.> Code footprint doesn't matter any more, with >common apps taking hundreds of megabytes. The runtime RAM use of LT >Spice is initially 4.5 megabytes, and under 12M running and plotting >the 6BK4 sim. Firefox is over 1G.Yes, we always had this problem with libraries, but many of those libraries were written for the purpose, and a simpler core is likely to pull less in. We shall see. And old code gets pretty crufty, and it's necessary to burn it to the ground and start over from time to time. Cue "Tobacco Road": .<https://www.youtube.com/watch?v=vKvynim8JHo>>Next, I want Spice models for their RF parts.There may be hope, because from Mike's talk it sounds like Qorvo bought into Mike's business model as well. Joe Gwinn
Reply by ●May 21, 20232023-05-21
On Sat, 20 May 2023 13:04:53 -0700, John Larkin <jlarkin@highlandSNIPMEtechnology.com> wrote:>On Sat, 20 May 2023 09:23:23 -0500, John S <Sophi.2@invalid.org> >wrote: > >>On 5/19/2023 11:28 AM, Lamont Cranston wrote: >>> I know nothing about it, but there is discussion on this IOgroup, >>> https://groups.io/g/LTspice/topic/new_simulator_written_by_mike/98208355?p=Created%2C%2C%2C20%2C2%2C180%2C0&jump=1 >>> >>> https://p.qorvo.com/qspice >>> >>> Dear Group! >>> >>> The simulator I've been working on for the last three years, mentioned here under its code name of S�P�Q�R, will beta imminently as QSPICE. >>> >>> QSPICE(S�P�Q�R) started out as a mission to get SPICE right. I started anew with the open sources. Found bugs in Kundurt's Sparse Matrix Package that I think can only be found if starting anew with code one already knows. The timestep control is also entirely rearchitected. >>> >>> But with the help of affiliations with a number of IC design and manufacturing concerns, it turned out to be more than just a more robust and faster analog SPICE program. QSPICE allows one to include massive amounts of digital. I'm humbled that the simulator turned out better than I could have expected. QSPICE responds to the fact that simulation requirements change. >>> >>> If you wish to participate in the Qorvo QSPICE beta, which is coming soon, you can sign up at https://p.qorvo.com/qspice >>> >>> Mike Engelhardt >>> Author of QSPICE >> >> >>I've never been a beta tester. LTSpice IV is what I live by. What are >>the obligations of the tester? > >Upgrade to XVII! It's worth the small hassle. >Evidently the new LTspice 17.1 doesn't support schematic preview while browsing for files. :{ I'll get over it - boB
