Re: [sage-support] Re: VirtualBox and computer class

2013-01-28 Thread Jori Mantysalo
On Thu, 24 Jan 2013, Dima Pasechnik wrote: 12 GB is quite much for one application. Our servers weren't physical hardware either, they were VMWare virtual hosts; 12GB was the limit VMWare supported (that's why we couldn't do with just one instance). Indeed, this way you only really use the ha

[sage-support] Re: VirtualBox and computer class

2013-01-24 Thread Jason Grout
On 1/24/13 1:37 PM, William Stein wrote: On Thu, Jan 24, 2013 at 8:39 AM, Jason Grout wrote: On 1/23/13 10:35 AM, Dima Pasechnik wrote: Think of the load sagenb.org can hold (it's a single machine, you know...), surely it can handle many hundreds of users doing things at the same time. I t

Re: [sage-support] Re: VirtualBox and computer class

2013-01-24 Thread William Stein
On Thu, Jan 24, 2013 at 8:39 AM, Jason Grout wrote: > On 1/23/13 10:35 AM, Dima Pasechnik wrote: >> >> Think of the load sagenb.org can hold (it's a single machine, you >> know...), >> surely it can handle many hundreds of users doing >> things at the same time. > > > I think there are usually not

[sage-support] Re: VirtualBox and computer class

2013-01-24 Thread Jason Grout
On 1/23/13 10:35 AM, Dima Pasechnik wrote: Think of the load sagenb.org can hold (it's a single machine, you know...), surely it can handle many hundreds of users doing things at the same time. I think there are usually not more than 200 simultaneous worksheets. Thanks, Jason -- You recei

[sage-support] Re: VirtualBox and computer class

2013-01-24 Thread P Purkayastha
On 01/24/2013 07:58 PM, Dima Pasechnik wrote: Our servers weren't physical hardware either, they were VMWare virtual hosts; 12GB was the limit VMWare supported (that's why we couldn't do with just one instance). Indeed, this way you only really use the hardware for the class, and in the remainin

[sage-support] Re: VirtualBox and computer class

2013-01-24 Thread Dima Pasechnik
On 2013-01-24, Jori Mantysalo wrote: > On Wed, 23 Jan 2013, Dima Pasechnik wrote: > >>> There is no problem when students do something on their own. But when ~20 >>> of them are sitting at a computer class and trying to do something at the >>> same time, we run out of memory. > >> in our experienc

Re: [sage-support] Re: VirtualBox and computer class

2013-01-24 Thread Jori Mantysalo
On Wed, 23 Jan 2013, Dima Pasechnik wrote: There is no problem when students do something on their own. But when ~20 of them are sitting at a computer class and trying to do something at the same time, we run out of memory. in our experience 30 people per server, with 12GB of RAM, worked OK.

Re: [sage-support] Re: VirtualBox and computer class

2013-01-23 Thread William Stein
On Wed, Jan 23, 2013 at 8:35 AM, Dima Pasechnik wrote: > On 2013-01-23, Jori Mantysalo wrote: >> On Wed, 23 Jan 2013, Dima Pasechnik wrote: >> How have you installed Sage to computer classes that has windows? The image is >> >>> I never heard of this. IMHO everyone who taught or teaches

[sage-support] Re: VirtualBox and computer class

2013-01-23 Thread Dima Pasechnik
On 2013-01-23, Jori Mantysalo wrote: > On Wed, 23 Jan 2013, Dima Pasechnik wrote: > >>> How have you installed Sage to computer classes that has windows? The >>> image is > >> I never heard of this. IMHO everyone who taught or teaches using Sage >> uses Sage servers (run locally; or, even --- a

Re: [sage-support] Re: VirtualBox and computer class

2013-01-23 Thread Jori Mantysalo
On Wed, 23 Jan 2013, Dima Pasechnik wrote: How have you installed Sage to computer classes that has windows? The image is I never heard of this. IMHO everyone who taught or teaches using Sage uses Sage servers (run locally; or, even --- a much less stable setup -- *sagenb.org ones); then not

[sage-support] Re: VirtualBox and computer class

2013-01-23 Thread Dima Pasechnik
On 2013-01-23, Jori Mantysalo wrote: > This is not directly related to Sage. However, Sage for Windows relies on > VirtualBox. > > How have you installed Sage to computer classes that has windows? The image > is I never heard of this. IMHO everyone who taught or teaches using Sage uses Sage se