Yes it could be done, but assuming that one client is saving the file locally and the other has to transfer what it has downloaded, no, this would not be any faster. Essentially you'd just be adding another seeder.
The reason for this is that there is a finite pool of seeders and leachers for any given torrent, so if there's 10 sources for a file and one of your clients is using 5 of them, your other client can't access those IP's.
Really simple. On most torrent clients, you select the torrent file, and underneath the Peers tab (it's near Files, etc.) You right click to "Add Peer" and enter the local IP address and port for the other torrent client.
[*] Doing it with different clients is extra hard because they won't even understand each other's format for representing partial download. Though if both write pieces directly to their final place in the file (usually named "full allocation"), support "periodic recheck" like Vuze, and don't move/rename on completion, it might work.
Both clients would theoretically be trying to connect to the same pool of seeders and leechers. Each client would randomly have a chance of getting better seeders and leechers, but assuming that there are enough of each, you will be maxing out your download bandwidth anyways.
The only potential advantage you might get from running 2 clients (if this were possible) is would have more connections per torrent, but this is generally configurable in each client anyways, and is usually set to a reasonable default. So I don't think it would really provide any benefit.
If you found two clients that didn't explode immediately when you tried this, you would likely have issues with both clients trying to write to the file at the same time, you would have many duplicate blocks downloaded and in the end your download would take far longer than it should have.
Most torrent "clients" (the term "peer" is more accurate - each host in the swarm connects to each other and there is no client-server relationship except with the tracker) will already contact multiple peers at the same time to try to get multiple pieces at once. This is usually configurable in your torrent application.
Of course, if multiple local applications try to write to a single file at the same time without coordination, you get corrupt data or one of the applications not working. I don't of any torrent application that lets two separate instances coordinate on downloading a single file on the same physical system. Of course, if you have two disparate systems or tell each application to save the file to different places, there is no conflict. But no benefit really, and you'll be consuming twice the amount of disk space to store two copies of the file.
If you have two systems on separate networks (say your house and a friend's house), though, and set both of them to download and seed a torrent (from their respective different "external" IPs), you are helping that torrent be more highly available to others. But not helping yourself.
uTorrent doesn't allow multiple instances on the same machine but if you have two machines running uTorrent on the same network with both downloading the same file with Local Peer Discovery enabled on one of them, then that machine would get the benefit of the two instances. My old favorite client BitTornado does allow multiple instances but two instances cannot download the same torrent file. (I forget why not.)
I assumed I just had to download the torrent file again, open it with uTorrent and then tell it to save the files in the same folder...however that only caused the files to start being downloaded again. I checked one of the files inside the torrent that i knew was already in the folder, but it started downloading again, even though I have the file in the folder and it had finished downloading before.
Yeah well that doesn't help. I've done what it says there, click the magnet link, select the file from the list of files inside the torrent, select the location, hit "Ok" and it just starts downloading the file again.
Does the "Name" of the torrent have to match the name of the folder? If all the files are into a folder called "psx-roms", do I have to name the torrent "psx-roms" and save it to the folder one level up the "psx-roms" directory?
Do I need to tell Utorrent to save the torrent to "G:\Games" under the name psx-roms to automatically access the "G:\Games\psx-roms" folder? Or directly into "G:\Games\psx-roms"? There doesn't seem to be any folders inside the torrent so I always used "G:\Games\psx-roms"
So I went to see if replacing the file I was downloading with a copy I had made beforehand would prompt the re-check to be activated, but now I open the G:\games\psx-roms folder and all the files are gone.
Well I still had a copy of one of the files so I continued trying to get the thing to work just so I could learn how to do it properly, but as I said before, clicking the .torrent file and adding it just causes the whole thing to stop at "Checking..." at whatever percent. This time at 37.2%. Does the check require some information from the Internet that it can't get because there are no seeds, or something like that? Any reason why this stopped at 37% and hasn't moved in 20 minutes?
Well we are talking about something between 30 and 40 GB of files here, so I didn't make a backup of the whole thing. I never expected it was going to be more difficult than double clicking the torrent, choosing the location and pressing Ok.
I've been trying with the single file that I had made a copy of, and even if I don't start the torrent right away, and while it's paused click "Force re-check", it does the same, stops at 37.2%. I'm totally baffled.
Then...how do you explain that it's stuck at 37.2%? I just want to understand this behavior, I use uTorrent all the time and I want to know how to fix this problem in case it happens again in the future.
Actually, after an hour of "checking", I went back only to find that the file is being downloaded again! Or is it downloading some meta-information about the torrent? I'm really confused at this point!
I stopped the torrent, deleted the file that was being downloaded, replaced it with the original file, and right clicked "Force re-check". If this works I'll try doing the same with the rest of the files.
Oh it's finished checking, and no the file is not shown as 100% downloaded. So even if it is the file, and it is a working file (just tried unzipping it and it works perfectly) uTorrent still decides to download it again. Could it be that the torrent has a different hash? Is uTorrent storing some local information that's causing the file to get downloaded again?
Well the thing is I don't really know if it's the same torrent. It seems to be the only version, I've checked different trackers and there's only one that contains that many files, it's over 300GB. And from the files I have in my hard disk, the ones that I've checked seem to have the same names and the same sizes. So I'd say they're the same torrent, although it could be a different version, but as I said I haven't found more than one of this type. Edit: I found the old .torrent file for the previous time I downloaded these files and when I try adding it, utorrent says that it is already on the list, so with 99% certainty, this is the same torrent.
I've just tried the same procedure with another torrent, same scenario: completely downloaded files, adding the torrent with the same name as the folder, etc. And that one worked perfectly. The same procedure, everything the same.
Could this be a problem of having downloaded just a few of the files inside the torrent? Does it need to check all of them in order to make sure they're the same? What do you think could be causing this problem?
Well I have another torrent where I have selected only one season of the show (it's a tv show) and if I press "Recheck" it checks all the file, and when it's done it goes to 100% and moves to "Seeding" with a status of "Finished". With doesn't happen with this torrent.
As Ciaobaby has explained many time in other posts, BitTorrent clients do not download files, they download blocks of data called pieces which get assembled to form files. As such it is frequently impossible to download only the data containing the desired file because that file may start or end somewhere inside a piece, making it necessary to download the extra piece or pieces. Therefore just replacing a file and expecting uTorrent to recheck it may not succeed if you don't have the end pieces of data where the file started or stopped.
For more than nine hours I sat and watched a film named "Shoah," and when it was over, I sat for a while longer and simply stared into space, trying to understand my emotions. I had seen a memory of the most debased chapter in human history. But I had also seen a film that affirmed life so passionately that I did not know where to turn with my confused feelings. There is no proper response to this film. It is an enormous fact, a 550-minute howl of pain and anger in the face of genocide. It is one of the noblest films ever made.
They talk and talk. "Shoah" is a torrent of words, and yet the overwhelming impression, when it is over, is one of silence. Lanzmann intercuts two kinds of images. He shows the faces of his witnesses. And then he uses quiet pastoral scenes of the places where the deaths took place. Steam engines move massively through the Polish countryside, down the same tracks where trains took countless Jews, gypsies, Poles, homosexuals and other so-called undesirables to their deaths. Cameras pan silently across pastures, while we learn that underneath the tranquility are mass graves. Sometimes the image is of a group of people, gathered in a doorway, or in front of a church, or in a restaurant kitchen.
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