I think what *you* don't realize is that I run this big, bad i7 to compensate for being woefully underendowed.
But seriously, I get your drift on running unattended processes. I buy probably a thousand computers a year and generally buy what people need, not what the latest IT comic book says they need to have;-)
Not quite. A single single-threaded process will not run faster on a multi-core processor (in fact it might run a little slower if the OS doesn't keep it running on the same core for the whole run, as jumping the task between cores uses L1 and L2 cache less efficiently) because the OS will not know how to try and split it up, but running multiple single-threaded tasks (i.e. your five instances of DeVeDe) will most likely benefit significantly (unless other bottlenecks such as I/O bandwidth/latency kick in).
My point was that with the kernel and whatever services are running spread out over multiple cores there *should* be more processor resources available per core to run the single-threaded application - at least that's been my experience.
So...you had to wait quite long anyway. Long enough that you decided to do something else in the meantime, because there's no way you would simply wait for the result. Long enough that the speedup offered by Core i7 in comparison to the cheapest Celeron didn't mean much, since in either case the task would be done after you returned.
Most likely the Celeron *wouldn't* have been done when I got home from work - running the same job on my old hyperthreading 2.8GHz machine would have taken about ten hours, just going by past experience. The old P4 took about as long to render video as it did to watch it.
If I *had* been home I'd have reniced the encoding processes so that I could do day-to-day stuff while rendering the video. It'd have taken twice as long but I wouldn't have seen much of a performance hit.
Can most programmes really be written to take advantage of so many cores?
Yup.
Got a Core i7-920 running at 3.2GHz at home - OS is 64-bit Kubuntu 9.10.
Yesterday I had five two-hour videos I wanted to render to DVD5 format - four were.avi and one was.mp4.
Launched five instances of DeVeDe to render the video and create the DVD file structure and did all five at the same time - then left for work. Took an hour and twelve minutes and the machine didn't melt, explode or let any of the magic smoke out of the box.
Even if an application isn't multithreaded the OS is - so even running a single task a multicore processor will give you a performance boost.
A Core i7 has four cores that'll run two threads each - presents as eight processor cores to the OS. I have no problem using them all;-)
Lived in Germany at the time. Eurospec 800XLs run on US power supplies and line voltage ran at (IIRC) 2.217 MHz. My itty bitty 13" Philips TV would display either PAL or NTSC so it worked just fine back in the states - until the TV died:-(
It's probably been said lotsa times in this thread but I use rsync to back up stuff to an external drive. I back up/home,/etc,/var/cache/apt/archives and the My Documents folder on the spousal unit's Windows machine.
As I said in another thread I work for Your Federal Government. Part of my job is to approve hardware and software procurements for this 3,500 user federal agency.
Sometime ago I get a requisition for a cordless mouse with an ergonomic assessment attached. An ergonomic assessment is filled out by a healthcare professional and exaplins why you might need a trackball, an ergonomic keyboard, a huge monitor and so on - and if you need ergonomic accomodations I think you should have them.
Anyway, I get a requisition for a cordless mouse with an ergonomic assessment signed by the head nurse. I call the head nurse and explain that this is ridiculous since mice move in a single plane and that this request (not her assessment) is bullshit.
Unfortunately I used the word "bullshit" in the conversation and HR got involved. In the end I had to apologize to the nurse, the user got the cordless mouse and the nurse told me that although mice do move in a single plane the cordless mouse keeps the user from acquiring or aggravating a repetitive stress because he doesn't have to untangle the mouse cord.
Funny, I wrote a review of this product but the product now shows zero reviews;-)
Anyway, this keyboard is tiny and has some compromises, like a shift key only on the left side of the keyboard. There is no configuration utility for the trackpad which irritates me - and Synaptics or Alps utilities just don't work.
But - I love this little keyboard. I wouldn't write a novel on a keyboard that's about the same size as a netbook and sometimes it takes two or three tries to connect, but battery life on the keyboard has been good and if I had it do do over again I might buy something a little bigger, but this one works pretty well.
I did my research and bought a Bluetooth dongle I knew worked under Linux and the whole thing was pretty much plug and play.
I work for an agency under DoD and have teleworkers who are out in the boonies. The sticking point for me is it's agin' the law to allow privately-owned hardware to connect to a gummint PC so what we do is recommend a Cradlepoint MBR-1000 aircard router.
It's a great solution - and since we're inflicting bandwidth limits on our VPN solution an aircard talks as fast as a cable modem.
Is Denon owned by Monster? Does it make digital audio streaming sound better?
Why yes. Yes, it does;-)
Denon's 1.5 meter (59 in.) proprietary ultra premium Denon Link cable was designed for the audio enthusiast. Made from high purity copper wire and high performance connection parts, the AK-DL1 will bring out all the nuances in digital audio reproduction from any of our Denon DVD players with the Denon Link feature connected to a Denon Link enabled Denon A/V receiver. The AK-DL1 employs high level tin-bearing alloy shielding not typically available in commercial cabling, to eliminate data loss caused by noise. Additionally, signal directional markings are provided for optimum signal transfer. Attention to detail when building this cable was used by employing high quality insulation and woven jacketing to reduce vibration and to add durability. Rounded plug levers help prevent breakage.
$500 for a 1.5m Ethernet cable? The cables even have signal directional markings;-)
I'm in the wrong business. I think I can make an Ethernet cable that performs just as well and is twice as long and sell it for half the price and still make a killing.
Sadly, I do own some Denon audio gear and like it. After seeing the $500 network cable I'm reevaluating whether I want to give the company any more of my business.
The amount of memory (RAM) that the virtual machine should have for itself. Every time a virtual machine is started, VirtualBox will allocate this much memory from your host machine and present it to the guest operating system, which will report this size as the (virtual) computerâ(TM)s installed RAM.
Note: Choose this setting carefully! The memory you give to the VM will not be available to your host OS while the VM is running, so do not specify more than you can spare. For example, if your host machine has 1 GB of RAM and you enter 512 MB as the amount of RAM for a particular virtual machine, while that VM is running, you will only have 512 MB left for all the other software on your host. If you run two VMs at the same time, even more memory will be allocated for the second VM (which may not even be able to start if that memory is not available). On the other hand, you should specify as much as your guest OS (and your applications) will require to run properly. A Windows XP guest will require at least a few hundred MB RAM to run properly, and Windows Vista will even refuse to install with less than 512 MB. Of course, if you want to run graphics-intensive applications in your VM, you may require even more RAM. So, as a rule of thumb, if you have 1 GB of RAM or more in your host computer, it is usually safe to allocate 512 MB to each VM. But, in any case, make sure you always have at least 256-512 MB of RAM left on your host operating system. Otherwise you may cause your host OS to excessively swap out memory to your hard disk, effectively bringing your host system to a standstill. As with the other settings, you can change this setting later, after you have created the VM.
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I think what *you* don't realize is that I run this big, bad i7 to compensate for being woefully underendowed.
But seriously, I get your drift on running unattended processes. I buy probably a thousand computers a year and generally buy what people need, not what the latest IT comic book says they need to have ;-)
Not quite. A single single-threaded process will not run faster on a multi-core processor (in fact it might run a little slower if the OS doesn't keep it running on the same core for the whole run, as jumping the task between cores uses L1 and L2 cache less efficiently) because the OS will not know how to try and split it up, but running multiple single-threaded tasks (i.e. your five instances of DeVeDe) will most likely benefit significantly (unless other bottlenecks such as I/O bandwidth/latency kick in).
My point was that with the kernel and whatever services are running spread out over multiple cores there *should* be more processor resources available per core to run the single-threaded application - at least that's been my experience.
If you left for work, would it have really made any difference to you if it took five times as long?
Well, yeah. I wouldn't have been able to brag about it ;-)
So...you had to wait quite long anyway. Long enough that you decided to do something else in the meantime, because there's no way you would simply wait for the result. Long enough that the speedup offered by Core i7 in comparison to the cheapest Celeron didn't mean much, since in either case the task would be done after you returned.
Most likely the Celeron *wouldn't* have been done when I got home from work - running the same job on my old hyperthreading 2.8GHz machine would have taken about ten hours, just going by past experience. The old P4 took about as long to render video as it did to watch it.
If I *had* been home I'd have reniced the encoding processes so that I could do day-to-day stuff while rendering the video. It'd have taken twice as long but I wouldn't have seen much of a performance hit.
240 mm sq, that's 15.49mm x 15.49mm
But not nearly as amusing. ;-)
Can most programmes really be written to take advantage of so many cores?
Yup.
Got a Core i7-920 running at 3.2GHz at home - OS is 64-bit Kubuntu 9.10.
Yesterday I had five two-hour videos I wanted to render to DVD5 format - four were .avi and one was .mp4.
Launched five instances of DeVeDe to render the video and create the DVD file structure and did all five at the same time - then left for work. Took an hour and twelve minutes and the machine didn't melt, explode or let any of the magic smoke out of the box.
Even if an application isn't multithreaded the OS is - so even running a single task a multicore processor will give you a performance boost.
A Core i7 has four cores that'll run two threads each - presents as eight processor cores to the OS. I have no problem using them all ;-)
1.17 billion transistors into a die that's approximately 240mm sq
That's a big chip.
...why we don't just do all this crap over an optical link?
...I will *not* consider 'partyd00d420@whatever' for a job. Sorry, just not going to happen.
I figured it was printing my resume on that Big Bambu paper that would get me noticed.
How many people here get around their workplace's blocking software by running an SSH tunnel to a proxy server on their home network?
I almost got fired for doing this.
...than I I paid for my i7 920, which is currently running at 3.5GHz without a hiccup.
Now the *motherboard* was considerably spendier ;-)
Lived in Germany at the time. Eurospec 800XLs run on US power supplies and line voltage ran at (IIRC) 2.217 MHz. My itty bitty 13" Philips TV would display either PAL or NTSC so it worked just fine back in the states - until the TV died :-(
JMO, but...
I think people who want to use a hair dryer in the bathtub should be encouraged to.
If you're old enough to read and you want to eat those little silica gel packets marked "Do Not Eat" the government shouldn't stand in your way.
And last, I think "hold my beer and watch this" events should be televised.
In short, the gummint is pissing in my gene pool.
It's probably been said lotsa times in this thread but I use rsync to back up stuff to an external drive. I back up /home, /etc, /var/cache/apt/archives and the My Documents folder on the spousal unit's Windows machine.
...the POSIX subsystem should be disabled. This is recommended by NSA and required by DoD.
I'm sorry, but that's not correct - we do have some lovely parting gifts for you, though.
First, there's a configuration management issue.
Second, if the user calls the helpdesk *once* because his mouse battery's dead you've doubled the cost of your mouse.
Last, I'll buy anything for anybody if there's a business need and I won't if there isn't.
Welcome to corporate IT ;-)
As I said in another thread I work for Your Federal Government. Part of my job is to approve hardware and software procurements for this 3,500 user federal agency.
Sometime ago I get a requisition for a cordless mouse with an ergonomic assessment attached. An ergonomic assessment is filled out by a healthcare professional and exaplins why you might need a trackball, an ergonomic keyboard, a huge monitor and so on - and if you need ergonomic accomodations I think you should have them.
Anyway, I get a requisition for a cordless mouse with an ergonomic assessment signed by the head nurse. I call the head nurse and explain that this is ridiculous since mice move in a single plane and that this request (not her assessment) is bullshit.
Unfortunately I used the word "bullshit" in the conversation and HR got involved. In the end I had to apologize to the nurse, the user got the cordless mouse and the nurse told me that although mice do move in a single plane the cordless mouse keeps the user from acquiring or aggravating a repetitive stress because he doesn't have to untangle the mouse cord.
I kid you not.
Appears to be proprietary digital audio.
But - the bandwidth requirement for digital audio is the same as the bitrate so even 5.6MHz Blu-Ray audio audio can be passed over CAT3 cable ;-)
I use this one on my htpc -
http://www.newegg.com/Product/Product.aspx?Item=N82E16823111040
Funny, I wrote a review of this product but the product now shows zero reviews ;-)
Anyway, this keyboard is tiny and has some compromises, like a shift key only on the left side of the keyboard. There is no configuration utility for the trackpad which irritates me - and Synaptics or Alps utilities just don't work.
But - I love this little keyboard. I wouldn't write a novel on a keyboard that's about the same size as a netbook and sometimes it takes two or three tries to connect, but battery life on the keyboard has been good and if I had it do do over again I might buy something a little bigger, but this one works pretty well.
I did my research and bought a Bluetooth dongle I knew worked under Linux and the whole thing was pretty much plug and play.
I work for an agency under DoD and have teleworkers who are out in the boonies. The sticking point for me is it's agin' the law to allow privately-owned hardware to connect to a gummint PC so what we do is recommend a Cradlepoint MBR-1000 aircard router.
It's a great solution - and since we're inflicting bandwidth limits on our VPN solution an aircard talks as fast as a cable modem.
Check the router out - we really like them.
http://www.cradlepoint.com/products/mbr1000-failsafe-broadband-n-router
Is Denon owned by Monster? Does it make digital audio streaming sound better?
Why yes. Yes, it does ;-)
Denon's 1.5 meter (59 in.) proprietary ultra premium Denon Link cable was designed for the audio enthusiast. Made from high purity copper wire and high performance connection parts, the AK-DL1 will bring out all the nuances in digital audio reproduction from any of our Denon DVD players with the Denon Link feature connected to a Denon Link enabled Denon A/V receiver. The AK-DL1 employs high level tin-bearing alloy shielding not typically available in commercial cabling, to eliminate data loss caused by noise. Additionally, signal directional markings are provided for optimum signal transfer. Attention to detail when building this cable was used by employing high quality insulation and woven jacketing to reduce vibration and to add durability. Rounded plug levers help prevent breakage.
...sold by Denon. I kid you not.
http://www.usa.denon.com/ProductDetails/3429.asp
$500 for a 1.5m Ethernet cable? The cables even have signal directional markings ;-)
I'm in the wrong business. I think I can make an Ethernet cable that performs just as well and is twice as long and sell it for half the price and still make a killing.
Sadly, I do own some Denon audio gear and like it. After seeing the $500 network cable I'm reevaluating whether I want to give the company any more of my business.
Looks like this technology could easily be adapted from police to taxi.
http://www.carbonmotors.com/
specs here -
http://www.carbonmotors.com/machine/specifications
from the user manual:
The amount of memory (RAM) that the virtual machine should have for itself.
Every time a virtual machine is started, VirtualBox will allocate this much memory
from your host machine and present it to the guest operating system, which
will report this size as the (virtual) computerâ(TM)s installed RAM.
Note: Choose this setting carefully! The memory you give to the VM will
not be available to your host OS while the VM is running, so do not specify
more than you can spare. For example, if your host machine has 1 GB of
RAM and you enter 512 MB as the amount of RAM for a particular virtual
machine, while that VM is running, you will only have 512 MB left for all the
other software on your host. If you run two VMs at the same time, even more
memory will be allocated for the second VM (which may not even be able to
start if that memory is not available). On the other hand, you should specify
as much as your guest OS (and your applications) will require to run properly.
A Windows XP guest will require at least a few hundred MB RAM to run properly,
and Windows Vista will even refuse to install with less than 512 MB. Of course,
if you want to run graphics-intensive applications in your VM, you may require
even more RAM.
So, as a rule of thumb, if you have 1 GB of RAM or more in your host computer,
it is usually safe to allocate 512 MB to each VM. But, in any case, make sure
you always have at least 256-512 MB of RAM left on your host operating system.
Otherwise you may cause your host OS to excessively swap out memory to your
hard disk, effectively bringing your host system to a standstill.
As with the other settings, you can change this setting later, after you have created
the VM.
or
1. search your computer through backdoor built into closed-source operating system.