buildString using a ForLoop to load and delete data on the fly

Yass,

I'm sure you're fixing the wrong problem here. Looping over a list with 200k elements should present no problem at all and would be highly efficient. I'm not sure what's actually failing, but I'm guessing it might just be because you're reading a lot of simulation data and maybe something is not being garbage collected? In other words, the repeated VT() calls might be the real problem.

I cannot fathom out what your code with the for loop is trying to do, but it's got several mistakes:

1. The for function is missing an initial value (so it would try to do a for loop from 5 up to sum-1 (i.e. 4) which means it will do nothing.
2. The buildString is trying to assemble a list of literal values (it's a quoted list) and so will always produce "/Isum/Vp" which is not what you want, I assume. Using buildString doesn't seem terribly sensible here - maybe sprintf(g "/I%d/Vp" sum) would be what you want?
3. I can't see what the point of adding this element onto beginning of a list and then removing it afterwards Surely you'd just do ocnPrint(?out Out value(VT(g) 30m)) and avoid the foreach loop
4. The setq line is missing parentheses and the remove() function has the wrong number of arguments.

Overall the code just won't work. Perhaps you could do:

for(i1 5
  sum = sum - 1
  sprintf(g "/I%d/Vp") sum)
  ocnPrint(?output Out value(VT(g) 30m))
)

that avoids constructing the list of signals, but I'm sure that's not your real problem.

Andrew

Hello, I noticed these errors thanks. The code runs perfect without the list() that has 200k elements, it doesnt display any stackoverflow, only when the list ia present. The script code for ocean is like this.

simulator( 'spectre )
design( ".../PixelArray/spectre/schematic/netlist/netlist")
resultsDir( ".../PixelArray/spectre/schematic" )
modelFile(
...
)

analysis('tran ?stop "31m" ?save "selected" ?compression "all"
?finalTimeOp nil )

desVar("x1" ---)
desVar("x2" ---)
.
.
.

envOption(
'enableNoiseRefactor t
'analysisOrder list("tran")
)
option( 'dc_pivot_check "yes"
'gmin "0"
)
option( ?categ 'turboOpts
'apsplus t
'errorLevel "Moderate"
'uniMode "APS"
)

temp( 27 )
Out = outfile("TextFile.txt" "w")

run()

for(i 1 262144
sum = sum + 1
sprintf(g "/I%d/Vp") sum)
ocnPrint(?output Out value(VT(g) 30m))
)

results()
close(Out)

I changed the names of a couple of things, trying not to leak important stuff. But basically it's an array of pixels, and each "/I1/Vp" has a value that I want to save in the Out file for later. I'm sorry for all the errors, I didnt paste correctly most of the code, and your tips are helping me a lot to understand what I'm doing wrong. The proposed solution with the code using sprintf brings an error.

Doesnt it need to be a string too? like convert sum into a string?

Thanks for the quick response, Yass

Checked the Intro_to_skill and the ")" was the issue. Changed the code to this.

sum = 0

for(i 1 262144

    sum = sum + 1

     sprintf(g "I%d/Vp" sum)

     ocnPrint(?output Out value(VT(g) 30m))

)

Runs smoothly! Thanks for the help

Yass

There must have been something wrong with your code with the foreach loop, because there's no way that just using a foreach loop on a list with only that number of elements could cause this problem - it must have been some other coding error you'd made. For example:

nodes=nil
for(i 1 262144
  nodes=cons(lsprintf("I%d/Vp" i) nodes)
)
foreach(elem nodes
  printf("Output: %s\n" elem)
)

works with absolutely no problem. The first builds the list, and the second loops over the list (I'm not using ocnPrint() or VT() in the second loop in my example, but that can't make a difference).

Anyway, glad you've got something working.

Andrew

It may be the version? 6.1.7-64b, subversion 6.1.7-64b.500.4. It can be that I'm putting the full list and not using any loop to generate it. In the code originally i had this.

Volt = list( "/I1/Vp" "/I2/Vp" "/I3/Vp" ..... "I262144/Vp")

Maybe if you do that you can replicate the error. But right now using the loop everything goes perfect. Thanks again!

Yass

Yass,

OK, you didn't mention that rather important detail. The problem is not the foreach at all, it's the fact that the list() function has too many arguments - it would fail on that. Having a long list in itself isn't an issue, but trying to build it with a single call to the list() function with over 260,000 arguments is going to be a problem.

If instead it was a quoted list:

Volt = '( "/I1/Vp" "/I2/Vp" "/I3/Vp" ..... "I262144/Vp")

then it would have been fine. Of course, if the names are incrementing, this is a bit pointless - generating it with code makes far more sense.

Andrew