If you wanted to make the system sequentially consistent, what are the key constrains you need to impose

The call of instructions and data must be sequential, there can be no reordering of instructions but to allow reordering, a fence must be created.

Explanation:

Sequential consistent memory model is able to use instructions when or before processing is done and after processing, so long as the instruction order is sequential.

This is similar to uploading a video on you-tube, the site immediately creates a page for the video even before the video is fully uploaded. Sent tweeter messages are seen by different people at different times, but the messages appear to be arranged sequentially.

to change your username, you must:

1) make sure what the username you want to change to is allowed in this community

2) contact a administrator (for example, jaysl)

3) through pm, tell the admin what you want to change to

4) if the username is allowed, it will be changed in a matter of seconds (minutes at most)

~

the file button then you go to insert tab and click insert hyperlink.