Encore SIM EDITOR SOFTWARE User's Guide download pdf (Page 417)

100

101

17-33

VCD+ (vpd) File Generation

• Saving statement execution for an entire design can increase

simulation time by eight times or more. To limit performance

degradation, limit the use of statement saves to certain scopes.

Instead of saving statement execution from time 0, turn on tracing

just prior to the time of a suspected problem and off after that time.

• The file size increases from 200 to 500 percent when saving line

execution data.

• Glitch detection and delta cycle may significantly increase the size

of the vpd file.

• The option +vpdports costs some CPU time and memory in the

initialization. It allows telling ports from internal signals in the

hierarchy browser.

• The option +vpddrivers costs some CPU time and memory

during the simulation. However, it allows visibility to the individual

values of drivers of a multiply driven net.

• The option +vpdfilesize (file wrap) can be used in a verification

environment where stimuli is automatically generated or read and

the results are verified by the test bench. Then, the simulation can

be made to stop when an error occurs, and one is guaranteed to

have the required history data even in a relatively small file that

is left.

1 2 ... 412 413 414 415 416 417 418 419 420 421 422 ... 448 449

Comments to this Manuals

No comments

Encore SIM EDITOR SOFTWARE User's Guide Page 417

Comments to this Manuals

Related products and manuals for Software Encore SIM EDITOR SOFTWARE