![]() ![]() While it is better to fix a program with such I/O patters, the local scratch lets such programs run without severely affecting other users or the cluster as a whole. These operations are especially stressful for networked file systems such as those containing the home and global scratch directories. performs I/O in small chunks (e.g., reading a file several bytes at a time).The local scratch should be used if a program performs inefficient input/output (I/O) such as when a program For example, some programs can use local scratch as a cache to avoid recomputing expensive calculations. The local scratch is useful if your job produces up to a few hundred gigabytes of file useful only for the lifetime of the job. Using local scratch has the advantage, that I/O operations are carried out inside the compute node and don't go over the network. shows info about this version in a popup.Compute nodes in the our clusters have a local disk that can be used for local scratch. The Show Motor Blocks command is for use with Lego WeDo, which is compatible with Scratch. you can choose to go in turbo speed (obvious what this is), normal, flash blocks fast (like single stepping only faster), or flash blocks slow (normal single stepping). Very slow, but useful for finding out what's going wrong. IT WILL NOT UNDO ANYTHING ELSE! Single stepping just flashes the block it's on at the moment and goes one block at a time. Undelete (cmd-Z and ctrl-Z, folks!) ONLY undeletes the last script you deleted. ![]() Warning: most people don't always read these, so it's best to put instructions in-game. When uploaded to the site, these will appear to the right and slightly down from the top of your project. In the F ile menu, the only thing of interest is Project Notes. The first three buttons let you choose your language, and save (cmd-S or ctrl-S works here, too) or upload your project to. everything that it is obvious what does I will not mention. they all work for sprites and the first two also work for scripts. The first is for duplicating, the second is for deleting, the third enlarging, and the fourth is for shrinking. Holding down shift while using any of these keeps them active instead of just going back to the cursor tool when you click and it does its stuff. Small stage is good for coding so you have lots of space to work with and large stage is the normal mode. However, at time of publication, you cannot run this off the internet, so you must have the project and Scratch on your computer to do this. Presentation mode is good for showing your project to people (e.g. in the far upper right corner, you have the option of viewing your project in presentation mode, small stage mode, or large stage mode. (Pre-script: the pictures are in order by where they are in Scratch, not the order I present them in.) The image notes speak for themselves, but here we go anyway. ![]() This can be useful but sometimes very annoying. _ *For example, if you captured the area in the note around the cat, you'd just get the cat, not the white around it. To view the number of scripts it has, mouse over it for a moment. You can do basic actions to it in the contextual menu (what you get if you right-click). (When it is uploaded to the website, it will automatically "click" the green flag button when its page loads.) In the area below that, you can paint or import a new sprite, or, if you need inspiration, just import a random sprite! You can select a sprite to work on and view its name. It will automatically make the outside white it sees transparent.*) The green flag and stop signs are used to start and stop the program. To make a new sprite from a screen region, right-click on the stage. (Tip: to make a new costume from a screen region, right-click on a sprite. ![]() Most of this you do with right-clicking (or ctrl-clicking with a one-button mouse). You can see what sprites are doing, where they are, view the location of your mouse relative to the center of the stage (0,0), start and stop the program, resize sprites, delete and duplicate sprites, export sprites, even capture a screen region to make a new sprite or costume or save a picture of the stage. ![]()
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