Xeon etc is probably overkill. Use a Raspberry Pi. About 7W under load with a monitor, KB, mouse w/WiFi active - you don't need a monitor, KB, or mouse once setup. You can disable the WiFi. (A couple more watts if you use a magnetic drive, which I recommend).
One time cost is about $100 once you add a case, power supply & SD card to the $35 board. For a reasonable workload, that should suffice and is about as inexpensive to run as you can get. Pi 3 is a 64-bit ARM CPU @1.2 GHz CPU - with 1GB memory, ethernet, WiFi, & bluetooth. (Some OSs are only 32 bit at the moment.) You can easily scale up with multiple hosts - it takes quite a number to reach the price of a Xeon. If you stick with standard packages, security is pretty much one-time setup & periodic package updates (which includes the kernel). As it's cheap enough to be dedicated to simulation, it's not a disaster if something bad does happen - as long as anything else on your internal network distrusts the Pi & its guests. If you put the emulated OS on the public network, that's a bigger exposure than the host OS. If you just provide SSH access, I recommend disabling passwords and using RSA keys only. It frustrates the script kiddies, and you don't have to worry about password quality. Cloud hosting has its own pitfalls. I'm not a fan. Someone mentioned running on a cellphone. That's tough if you want remote access because as frequently documented here, WiFi implementations don't get along with SimH's networking. Have fun. On 01-Dec-17 15:09, Hittner, David T [US] (MS) wrote: > > You could also look at running a super-efficient 24x7 server at home > to minimize your electric costs. > > > > In my last computer build where I was trying to maximize performance > with minimal power use, I put together an E3 Xeon Server with ECC > memory that pulls an average of 35W running a SIMH VM with idle enabled. > > It’s all based on buying power efficient equipment. It runs near > noiseless and cool also. > > > > Intel Xeon E3-1275v3 3.5GHz 4C with Integrated graphics (which is fine > for a server). Max 84W. > > 32GB ECC memory (overkill for SIMH, but I do other things with the > server :-) > > 500GB M.2 NVME SSD > > 1TB 2.5” HDD > > 5.25” BLU-Ray ODD > > 80+ Gold PSU > > Windows 10 Pro OS (for host) > > VMware Workstation for virtualization, although you could use the > built in Windows 10 Hyper-V virtualization for free > > > > 2.5” disk drives and SSDs pull a lot less power than their rotating > 3.5” equivalents. So does using Integrated graphics vs. discrete video > cards if the performance is OK. > > > > Your point about having others manage the network security is pretty > darn valid though !! > > > > Dave > > > > *From:*Simh [mailto:[email protected]] *On Behalf Of > *Joseph Oprysko > *Sent:* Friday, December 01, 2017 2:37 PM > *To:* Dan Gahlinger <[email protected]> > *Cc:* simh <[email protected]> > *Subject:* EXT :Re: [Simh] C9.io > > > > Dan, it is easy peasy, but not quite free, as if you want 24/7 access > to the box, you have to keep the system running 24-7, so electricity > costs. Plus, I’m planning on having others log in as well, thus I > don’t want to open up my network like that. That’s why I’m looking for > a free hosted/Cloud solution. That way someone else can deal with the > rest of the network security. I do enough of that for work anyway, > don’t want to have to monitor my home network as thoroughly. > > > > On Fri, Dec 1, 2017 at 1:12 PM Dan Gahlinger <[email protected] > <mailto:[email protected]>> wrote: > > A Linux box running simh bridged with nat > > Easy peasy and free > > > > Get Outlook for iOS <https://aka.ms/o0ukef> > > ------------------------------------------------------------------------ > > *From:*Simh <[email protected] > <mailto:[email protected]>> on behalf of Joseph > Oprysko <[email protected] <mailto:[email protected]>> > *Sent:* Friday, December 1, 2017 1:09:37 PM > *To:* Ray Jewhurst > *Cc:* simh > *Subject:* Re: [Simh] C9.io > > > > Well, running from inside a house and making accessible from the > outside is easy. But most ot my computers at home generally don’t > run 24/7. > > > > Mainly what’s needed for what we both want to be able to do isn’t > really a shell account on a shared machine, but literally a > dedicated VM instance, but we need to be able to access that > instance through a public IP address. > > > > On a home network, a private IP Address (192.168.x.x, 172.x.x.x > ‘actually I don’t think it’s the whole 172 network’, or a > 10.x.x.x) it’s easy enough to setup port forwarding to make it > accessible. But on the Cloud based VM’s, I don’t know if there is > a way to do it. Well, I know there ARE ways, usually involves > paying for the instance, an external address, and possibly the > amount of traffic. > > > > Actually, I know Bluehost (is it still a thing?) used to give you > a VM with public address in combination with their hosting/domain > name service. But I’m hoping to find one that will not cost me > anything. > > > > On Fri, Dec 1, 2017 at 12:21 PM Ray Jewhurst > <[email protected] <mailto:[email protected]>> wrote: > > I have been trying to figure out a solution for something > similar to that. I want to be able to run a PDP-11 outside of > my house for Fortran development. I would be running it on my > Android phone. > > > > On Dec 1, 2017 12:11 PM, "Joseph Oprysko" <[email protected] > <mailto:[email protected]>> wrote: > > Does anyone know if I can use the Cloud9 IDE to host a > simh System emulation? > > > > I know I’m able to build and execute it in the > environment, but what I’d really like to achieve is to > have a system (or several) running on various instances. > And be able to connect to them from an external IP > address, I believe I am able to SSH into an instance, or > access it through the web based IDE. > > > > An example might be better. Say I setup an HP system > running Time-Share Basic. Would I be able to telnet to the > TSB instance from various computers? > > > > Thank you, > > > > Joe > > -- > > Normal Person: Hey, it seems that you know a lot. > Geek: To be honest, it's due to all the surfing I do. > Normal Person: So you go surfing? > Normal Person: But I don't think that has anything to do > with knowing a lot... > Geek: I think that's wrong on a fundamental level. > Normal Person: Huh? Huh? What? > > > > _______________________________________________ > Simh mailing list > [email protected] <mailto:[email protected]> > http://mailman.trailing-edge.com/mailman/listinfo/simh > > > > -- > > Normal Person: Hey, it seems that you know a lot. > Geek: To be honest, it's due to all the surfing I do. > Normal Person: So you go surfing? > Normal Person: But I don't think that has anything to do with > knowing a lot... > Geek: I think that's wrong on a fundamental level. > Normal Person: Huh? Huh? What? > > -- > > Normal Person: Hey, it seems that you know a lot. > Geek: To be honest, it's due to all the surfing I do. > Normal Person: So you go surfing? > Normal Person: But I don't think that has anything to do with knowing > a lot... > Geek: I think that's wrong on a fundamental level. > Normal Person: Huh? Huh? What? > > > > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh
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