Not able to configure thru +uvm_set_config_int:

[kamboj]

Hi,

I want to configure a variable thru command line interface +uvm_set_config_int=uvm_test_top.env,test_variable,7

In my env. i have declared test variable as

int test_variable;

I am able to get UVM_CMDLINE_PROC calling in test.log

UVM_INFO @ 0: reporter [uVM_CMDLINE_PROC] Applying config setting from the command line: +uvm_set_config_int=uvm_test_top.env,test_variable,7

but when i print value of test_variable it's coming 0.

By configuring thru command line +uvm_set_config_int, it calls set_config_int(), which call uvm_config_db.

My question is i need do get the value of test_variable by uvm_config_db#(int), then i will be able to get the correct value as 7 or I am missing something here?

I am using UVM-1.1a and VCS compiler F-2011.12-SP1-1_Full64

Thanks

Pankaj

[uwes]

Hi,

I want to configure a variable thru command line interface +uvm_set_config_int=uvm_test_top.env,test_variable,7

In my env. i have declared test variable as

int test_variable;

I am able to get UVM_CMDLINE_PROC calling in test.log

UVM_INFO @ 0: reporter [uVM_CMDLINE_PROC] Applying config setting from the command line: +uvm_set_config_int=uvm_test_top.env,test_variable,7

but when i print value of test_variable it's coming 0.

By configuring thru command line +uvm_set_config_int, it calls set_config_int(), which call uvm_config_db.

My question is i need do get the value of test_variable by uvm_config_db#(int), then i will be able to get the correct value as 7 or I am missing something here?

I am using UVM-1.1a and VCS compiler F-2011.12-SP1-1_Full64

Thanks

Pankaj

Set-config-int corresponds to uvm_config_db#(uvm_bitstream_t).

/uwe

[kamboj]

Thanks for response.

So you mean to say after +uvm_set_config_int=uvm_test_top.env,test_variable,7.

I need to get the value by

uvm_config_db#(bit[3:0])::get(this,"","test_variable",test_variable_i);

I tried this also, but didn't work, still getting value as 0.

--Pankaj

[uwes]

No, I said use as type "uvm_bitstream_t". All integral type for set-config-int are mapped to this one.

[kamboj]

Thanks.. i am able to set to correct value now.

Just want to ask if this ("uvm_bitstream_t") applies for +uvm_set_config_string also ?

[uwes]

no, uvm_bitstream_t applies only to all integral types accessed via set_config_int. set_config_string uses "string" as type for the config_db and set_config_object uses "uvm_object" as type.

/uwe

[nbalakrishnan]

I have exactly the same problem. This a legacy code.

int var_size=4096;

setting from cmd line as follows , didnt overwrite the default value and reflect the new value 512.

+uvm_set_config_int=*,var_size,512

even after changing the type to uvm_bitstream_t also , it didnt work.

The code also has other int type variables that get set thru +uvm_set_config_int. So I am guessing

probaly there is some localparam that has the same name var_size. but didnt find anything yet. Since noticed this post , thought of reposting the question.. any clues on how else I can debug this? Thanks.

[uwes]

hi,

to have +uvm_set_config_int=*,var_size,512

work the following needs to be in place:

1. it needs to be a uvm_field_int (if you use autoconfiguration)

2. it have to be a field of a component

3. there should be no other overrides

/uwe

[Ananth]

Hi,

I want to randomize the value here.

+uvm_set_config_int=*,var_size,<randomized value>

can we pass the randomized value here?

example:

+uvm_set_config_int=*,var_size,inside [100:500]

[David Black]

Not directly, but you could create two knobs and use them in a constraint.

+uvm_set_config.int=*,minsize,100 +uvm_set_config_int,*,max_size,500

then internally

class MySeq extends uvm_sequence #(MyTrans);
  `uvm_object_utils(MySeq)
  rand  int var_size;
  rand int min_size, max_size;
  constraint Size { min_size <= var_size; var_size <= max_size; }
  ....
endclass: MySeq