There are many hard problems here. Today's search engines get keywords and return websites that are sorted by relevance. Watson will need to figure out what the question (well, answer) is, and then retrieve a single precise question. This is really pushing computing to a new level.
Beating Kasparov was nice, but this is much more difficult.
They are able to work and vote without restriction. That is not true of Christian and Muslim Arabs, living in Israel.
I bet you didn't know that you're incredibly wrong. Any Israeli citizen can vote, regardless of religion. There are currently 14 Muslim members in the Israeli parliament. Muslims study freely in Israeli universities and work in Israeli companies. The same is obviously not true for Jews in most Muslim countries.
Run? We need to explore! I see the words "ancient" and "Antartica", and I think awesome chair weapon to fight off the Goa'uld. Of course, the ZPM is probably depleted...
The problem isn't ext4 - it's an ext4 flag that gives you better data reliability in case of a power failure. If you're willing to risk it (or have a good UPS), you can change the flag and get all that performance back.
I also have to say that for a site that does so much benchmarking, phoronix is incredibly unprofessional. How about error bars on those bar graphs? Are caches cleared before each benchmark? Etc.
Re:Does XEN have a future?
on
The Book of Xen
·
· Score: 2, Insightful
KVM does not do paravirtualization, it virtualizes a full x86 processor (with all its overhead)
KVM does not need to do para-virtualization, but it can do para-virtualized I/O to get better performance (see virtio).
Re:Does XEN have a future?
on
The Book of Xen
·
· Score: 2, Informative
They're both Linux only at this point, and Xen effectively runs a forked version of Linux because it isn't, and won't be, upstream.
This is false. You can actually run various BSDs under Xen, and you can run Windows too.
I believe he meant that the hypervisor itself is a forked version of Linux. Sure, you can run any guest OS you want on both Xen and KVM.
Re:Does XEN have a future?
on
The Book of Xen
·
· Score: 2, Interesting
Redhat et al are doing xen.. I think (corrections please)
Correction: Red Hat aquired Qumranet, the inventors of KVM (link), so Red Hat is abandoning Xen in favor of KVM as well.
Yea but properly use them? Today, the OS uses the cores in a pretty stupid way, and you end up with data structures being shared by cores, and so you need to lock them (expensive) and copy data between cores (expensive).
Once the operating systems handle them well, and application programmers are more aware of these issues, things will be much better in multi-core-land.
Does the Istanbul have Extended Page Table support like Nehalem does? This is supposed to give a big performance boost to virtual machines, though I haven't seen any hard numbers. Any info?
Not quite there yet, but I saw a nice Israeli UAV on Futureweapons. You launch by hand, can select a location to "hover" over, and then press "return home". It flies back on its own, points itself in the direction of the wind, and glides down.
That's only if a human needs to interface with it directly. If the tiny computer had networking capabilities, you could access it through that. How about a pre-programmed computer that collect data from their surroundings? They could be injected into a person's blood stream for health monitoring, spread around the worlds oceans, and even dispersed in the atmosphere. And that's just one direction that you could go with this. Don't limit your thinking to the computer that you're sitting in front of.
No, not that I would have done it anyway. It's up on the web, for free. They actually had more expensive options, where I would pay another $100 or so for a company to put it up on their site and sell it, and I would get a commission. However, I'd rather have a larger audience read it.
It's actually up for free on the web - anyone can download it and print it. I want a nice, bounded copy. The $200 that I initially paid includes the cost for bounded copies for the school's library, but if I want one for myself I have to either pay them, or pay someone else to do it (I heard from others that it won't look the same or as good as the original).
I just paid $60 for a copy of MY OWN dissertation! Five years of hard work and then my university makes me pay $200+ for copyright and publishing, then charges me another $60 to get a copy!
Yea of course it's anectodal, but I lost my data off 4 of them within 6 months, used for taking files to/from work. That's enough of a reason for me not to store my OS on one.
What's worse is that USB keys are generally unreliable. If you're running your OS off one with all of the data I can easily imagine some important blocks becoming unaccessible in 6-12 months. As it is, I won't store anything I don't have backed up on one of these things.
Slashdot Mirror
FYI: "drop_caches" only drops clean pages, so you need to run "sync" first if you want to properly flush your cache.
Looks like Yahoo! also fired their exclamation point? If only...
Beating Kasparov was nice, but this is much more difficult.
They are able to work and vote without restriction. That is not true of Christian and Muslim Arabs, living in Israel.
I bet you didn't know that you're incredibly wrong. Any Israeli citizen can vote, regardless of religion. There are currently 14 Muslim members in the Israeli parliament. Muslims study freely in Israeli universities and work in Israeli companies. The same is obviously not true for Jews in most Muslim countries.
Run? We need to explore! I see the words "ancient" and "Antartica", and I think awesome chair weapon to fight off the Goa'uld. Of course, the ZPM is probably depleted...
The problem isn't ext4 - it's an ext4 flag that gives you better data reliability in case of a power failure. If you're willing to risk it (or have a good UPS), you can change the flag and get all that performance back.
I also have to say that for a site that does so much benchmarking, phoronix is incredibly unprofessional. How about error bars on those bar graphs? Are caches cleared before each benchmark? Etc.
KVM does not do paravirtualization, it virtualizes a full x86 processor (with all its overhead)
KVM does not need to do para-virtualization, but it can do para-virtualized I/O to get better performance (see virtio).
They're both Linux only at this point, and Xen effectively runs a forked version of Linux because it isn't, and won't be, upstream.
This is false. You can actually run various BSDs under Xen, and you can run Windows too.
I believe he meant that the hypervisor itself is a forked version of Linux. Sure, you can run any guest OS you want on both Xen and KVM.
Redhat et al are doing xen .. I think (corrections please)
Correction: Red Hat aquired Qumranet, the inventors of KVM (link), so Red Hat is abandoning Xen in favor of KVM as well.
Mod mistake undo
Once the operating systems handle them well, and application programmers are more aware of these issues, things will be much better in multi-core-land.
Does the Istanbul have Extended Page Table support like Nehalem does? This is supposed to give a big performance boost to virtual machines, though I haven't seen any hard numbers. Any info?
So?
Not quite there yet, but I saw a nice Israeli UAV on Futureweapons. You launch by hand, can select a location to "hover" over, and then press "return home". It flies back on its own, points itself in the direction of the wind, and glides down.
Or maybe you're just posting a negative review because you work for the competition? :-)
Good thing Slashdotters don't read articles. Otherwise we would be an accessory to linking an article about linking articles.
That's only if a human needs to interface with it directly. If the tiny computer had networking capabilities, you could access it through that. How about a pre-programmed computer that collect data from their surroundings? They could be injected into a person's blood stream for health monitoring, spread around the worlds oceans, and even dispersed in the atmosphere. And that's just one direction that you could go with this. Don't limit your thinking to the computer that you're sitting in front of.
Right. Not even that *WHOOSH* could cool something to -20 K.
You're assuming that getting on Slashdot generates traffic for them, but we all know that nobody RTFA.
No, not that I would have done it anyway. It's up on the web, for free. They actually had more expensive options, where I would pay another $100 or so for a company to put it up on their site and sell it, and I would get a commission. However, I'd rather have a larger audience read it.
It's actually up for free on the web - anyone can download it and print it. I want a nice, bounded copy. The $200 that I initially paid includes the cost for bounded copies for the school's library, but if I want one for myself I have to either pay them, or pay someone else to do it (I heard from others that it won't look the same or as good as the original).
I just paid $60 for a copy of MY OWN dissertation! Five years of hard work and then my university makes me pay $200+ for copyright and publishing, then charges me another $60 to get a copy!
Yes, it was FAT. And yes, I know FAT sucks and all, but I didn't have a choice at the time.
Yea of course it's anectodal, but I lost my data off 4 of them within 6 months, used for taking files to/from work. That's enough of a reason for me not to store my OS on one.
What's worse is that USB keys are generally unreliable. If you're running your OS off one with all of the data I can easily imagine some important blocks becoming unaccessible in 6-12 months. As it is, I won't store anything I don't have backed up on one of these things.