Error: ~~~~~~~~~~~~~~~~ Runtime not empty!!! ~~~~~~~~~~~~~~~~

[gutjuri]

Dear ladnir,
I am working on implementing a program that receives two tables A and B as input and computes the sum per category. The input tables are of the following structure:

A:

key	cat
1	1
2	1
3	2

B:

key	val
1	10
2	20
3	5

In this example, the computed result should be the following table:

C:

cat	val
1	30
2	5

Currently, this is my code:

#include <iostream>
#include <vector>
#include <assert.h>
#include "xtabs.h"

#include "aby3-DB/DBServer.h"
#include <cryptoTools/Network/IOService.h>
#include "aby3/sh3/Sh3Runtime.h"
#include "aby3/sh3/Sh3Encryptor.h"
#include "aby3/sh3/Sh3Evaluator.h"

using namespace oc;
using namespace aby3;
using namespace std;

void xtabs_test(u64 partyIdx, std::vector<int> ids, std::vector<int> values, int nCats)
{
  std::cout << "testing xtabs..." << std::endl;

  IOService ios;

  DBServer srv;

  PRNG prng(ZeroBlock);

  if (partyIdx == 0)
  {
    Session s01(ios, "127.0.0.1:3030", SessionMode::Server, "01");
    Session s02(ios, "127.0.0.1:3031", SessionMode::Server, "02");
    srv.init(0, s02, s01, prng);
  }
  else if (partyIdx == 1)
  {
    Session s10(ios, "127.0.0.1:3030", SessionMode::Client, "01");
    Session s12(ios, "127.0.0.1:3032", SessionMode::Server, "12");
    srv.init(1, s10, s12, prng);
  }
  else
  {
    Session s20(ios, "127.0.0.1:3031", SessionMode::Client, "02");
    Session s21(ios, "127.0.0.1:3032", SessionMode::Client, "12");
    srv.init(2, s21, s20, prng);
  }

  auto keyBitCount = srv.mKeyBitCount;
  std::vector<ColumnInfo>
      catCols = {ColumnInfo{"key", TypeID::IntID, keyBitCount},
                 ColumnInfo{"cat", TypeID::IntID, keyBitCount}},
      valCols = {ColumnInfo{"key", TypeID::IntID, keyBitCount},
                 ColumnInfo{"val", TypeID::IntID, keyBitCount}};

  u64 rows = ids.size();
  assert(ids.size() == rows);
  assert(values.size() == rows);

  Table catData(rows, catCols), valData(rows, valCols);

  // initializes data into Table (still in the clear)
  for (u64 i = 0; i < rows; ++i)
  {
    if (partyIdx == 0)
    {
      catData.mColumns[0].mData(i, 0) = ids[i];
      catData.mColumns[0].mData(i, 1) = values[i];
    }
    else if (partyIdx == 1)
    {
      valData.mColumns[0].mData(i, 0) = ids[i];
      valData.mColumns[0].mData(i, 1) = values[i];
    }
  }

  SharedTable catTable, valTable;
  catTable = (partyIdx == 0) ? srv.localInput(catData) : srv.remoteInput(0);
  valTable = (partyIdx == 1) ? srv.localInput(valData) : srv.remoteInput(1);

  auto res = srv.join(catTable["key"], valTable["key"], {catTable["cat"], valTable["val"]});
  cout << "not reached " << endl;
}

This is not yet finished. As you see, I want to perform a join operation and later sum op the values per category (not implemented yet).
Unfortunately, the last line is not reached, as I get an error on the previous line:

testing xtabs...
testing xtabs...
testing xtabs...
~~~~~~~~~~~~~~~~ Runtime not empty!!! ~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~ Runtime not empty!!! ~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~ Runtime not empty!!! ~~~~~~~~~~~~~~~~
std::bad_alloc
std::bad_array_new_length
std::bad_array_new_length

Do you have an idea why this error pops up? I have read the source code of aby3 but was unable to get to the root of the problem.

Best, Juri

[ladnir]

ok, try now. i think i fixed it.